Motion: Speed, Velocity, Acceleration, and Newton's Laws

Question 1

In the International System of Units (SI), the unit for acceleration is:

Accepted Answer

m/s²

Answer

m/s

Answer

km/h

Answer

mph

Question 2

An object moving at a constant speed has:

Accepted Answer

No acceleration

Answer

Non-zero acceleration

Answer

Changing velocity

Answer

Changing displacement

Question 3

Newton's first law of motion states that:

Accepted Answer

An object at rest remains at rest unless acted upon by an external force

Answer

The acceleration of an object is proportional to the net force acting on it

Answer

For every action, there is an equal and opposite reaction

Answer

An object in motion will remain in motion with the same speed and direction unless acted upon by an external force

Question 4

A car travels 100 km in 2 hours. Calculate its average speed.

Accepted Answer

50 km/h

Answer

25 km/h

Answer

75 km/h

Answer

100 km/h

Question 5

Which of the following does NOT influence the acceleration of an object?

Accepted Answer

Its shape

Answer

Its mass

Answer

The force acting on it

Answer

The surface it is moving on

Question 6

The displacement-time graph of an object moving with a constant velocity is:

Accepted Answer

A straight line with a positive slope

Answer

A straight line with a negative slope

Answer

A parabola

Answer

A circle

Question 7

The velocity-time graph of an object moving with a constant acceleration is:

Accepted Answer

A straight line with a positive slope

Answer

A straight line with a negative slope

Answer

A parabola

Answer

A circle

Question 8

An object is launched vertically upward. At the highest point of its path, its velocity is:

Accepted Answer

Zero

Answer

Maximum

Answer

Minimum

Answer

Constant

Question 9

The force of friction:

Accepted Answer

Always acts in the opposite direction to the motion

Answer

Always acts in the same direction as the motion

Answer

Always acts perpendicular to the motion

Answer

Can act in any direction

Question 10

Which of the following is the correct unit of speed?

Accepted Answer

Meter per second

Answer

Newton

Answer

Kilogram

Answer

Celsius

Question 11

An object with a constant speed is:

Accepted Answer

Moving without changing speed

Answer

Accelerating

Answer

Decelerating

Answer

Stationary

Question 12

The rate at which an object's velocity changes is called:

Accepted Answer

Acceleration

Answer

Average velocity

Answer

Impulse

Answer

Force

Question 13

According to Newton's second law of motion, the force acting on an object is:

Accepted Answer

Equal to the mass of the object multiplied by its acceleration

Answer

Equal to the mass of the object

Answer

Equal to the velocity of the object

Answer

Equal to the momentum of the object

Question 14

Which of the following graphs shows an object moving with constant velocity?

Accepted Answer

A horizontal line

Answer

A straight line with a positive slope

Answer

A straight line with a negative slope

Answer

A curved line

Question 15

Which force makes objects fall to the ground?

Accepted Answer

Gravity

Answer

Tension

Answer

Friction

Answer

Normal force

Question 16

What term describes a change in an object's speed over time?

Accepted Answer

Acceleration

Answer

Velocity

Answer

Momentum

Answer

Displacement

Question 17

Which of the following is not one of Newton's laws of motion?

Accepted Answer

Energy cannot be created or destroyed.

Answer

An object at rest stays at rest unless acted upon by an unbalanced force.

Answer

An object in motion stays in motion with the same speed and direction unless acted upon by an unbalanced force.

Answer

Force is equal to mass multiplied by acceleration.

Question 18

Which unit is used to measure velocity?

Accepted Answer

m/s

Answer

m/s²

Answer

kg

Answer

N

Question 19

When a ball is thrown vertically upward, its velocity at its highest point is:

Accepted Answer

Zero

Answer

Maximum

Answer

Minimum

Answer

Constant

Question 20

A car travels at a constant speed of 60 kilometers per hour. Convert this speed to meters per second.

Accepted Answer

16.7 m/s

Answer

10 m/s

Answer

30 m/s

Answer

60 m/s

Question 21

Which graph represents an object moving with constant acceleration?

Accepted Answer

A straight line with a positive slope

Answer

A straight line with a negative slope

Answer

A curved line

Answer

A horizontal line

Question 22

Which quantity is a measure of how fast an object is moving in a specific direction?

Accepted Answer

Velocity

Answer

Speed

Answer

Acceleration

Answer

Displacement

Question 23

An object moving at a constant velocity has:

Accepted Answer

Unchanging speed and direction

Answer

Changing speed and direction

Answer

Changing speed but constant direction

Answer

Unchanging speed but changing direction

Question 24

The rate at which velocity changes is known as:

Accepted Answer

Acceleration

Answer

Speed

Answer

Displacement

Answer

Momentum

Question 25

According to Newton's first law of motion, an object at rest will remain at rest unless:

Accepted Answer

Pushed or pulled

Answer

In contact with another object

Answer

Heated or cooled

Answer

Experiencing friction

Question 26

The SI unit of acceleration is:

Accepted Answer

m/s²

Answer

m/s

Answer

km/h

Answer

N

Question 27

Which of the following is NOT a factor that can affect the motion of an object?

Accepted Answer

Color

Answer

Mass

Answer

Force

Answer

Shape

Question 28

Which of the following describes drag?

Accepted Answer

A force that opposes motion and acts in the direction of motion

Answer

A force that assists motion and acts in the direction of motion

Answer

A force that acts perpendicular to the direction of motion

Answer

A force that is independent of the speed of the object

Question 29

According to Newton's second law of motion, the acceleration of an object is directly proportional to the:

Accepted Answer

Force applied to the object

Answer

Mass of the object

Answer

Velocity of the object

Answer

Density of the object

Question 30

Which of the following is an example of centripetal force?

Accepted Answer

Tension

Answer

Friction

Answer

Gravity

Answer

Buoyancy

Question 31

A satellite orbits the Earth in a circular path. Which of the following forces is responsible for keeping the satellite in its orbit?

Accepted Answer

Gravity

Answer

Centrifugal force

Answer

Tension

Answer

Friction

Question 32

Which of the following is a unit of acceleration?

Accepted Answer

Meters per second squared

Answer

Meters per second

Answer

Kilometers per hour

Answer

Miles per hour

Question 33

When a ball is thrown horizontally from a height, which shape best describes its path through the air?

Accepted Answer

Parabola

Answer

Straight line

Answer

Circle

Answer

Ellipse

Question 34

Which type of friction allows a car to move by acting between its tires and the road?

Accepted Answer

Rolling friction

Answer

Static friction

Answer

Sliding friction

Answer

Fluid friction

Question 35

A ball is thrown straight up in the air. At the very top of its path, what is true about its energy?

Accepted Answer

The ball has the most potential energy and no kinetic energy.

Answer

The ball has the most kinetic energy and no potential energy.

Answer

The ball has no kinetic or potential energy.

Answer

The ball has the most kinetic and potential energy.

Question 36

An object moves in a circle at a constant speed. Which force acts on the object, and in which direction does this force act?

Accepted Answer

Centripetal force, towards the center of the circle

Answer

Gravitational force, towards the center of the circle

Answer

Centrifugal force, away from the center of the circle

Answer

Frictional force, in the direction of motion

Question 37

Which of the following is the unit of velocity?

Accepted Answer

m/s

Answer

m

Answer

s

Answer

m/s/s

Question 38

An object is traveling with a constant velocity. What is its acceleration?

Accepted Answer

0 m/s/s

Answer

10 m/s/s

Answer

5 m/s/s

Answer

1 m/s/s

Question 39

Which of Newton's laws of motion describes the relationship between an object's mass, velocity, and the force acting on it?

Accepted Answer

F = ma

Answer

F = mv

Answer

a = F/m

Answer

v = F/m

Question 40

Which of the following is a vector quantity?

Accepted Answer

Velocity

Answer

Mass

Answer

Distance

Answer

Time

Question 41

A ball is thrown vertically upwards. What is the direction of its acceleration at the highest point of its trajectory?

Accepted Answer

Downward

Answer

Upward

Answer

Zero

Answer

Horizontal

Question 42

Which of the following forces causes an object to move in a circular path?

Accepted Answer

Centripetal force

Answer

Gravitational force

Answer

Air resistance

Answer

Friction

Question 43

Which of the following is the SI unit of acceleration?

Accepted Answer

m/s/s

Answer

m/s

Answer

km/h

Answer

mph

Question 44

A ball is thrown vertically upwards. At the highest point of its trajectory, what is its velocity?

Accepted Answer

0 m/s

Answer

19.6 m/s

Answer

-9.8 m/s

Answer

9.8 m/s

Question 45

According to Newton's third law of motion, every action has an equal and opposite reaction. What does this mean?

Accepted Answer

For every force exerted, an equal and opposite force is exerted in response.

Answer

The forces always act in the same direction.

Answer

The forces always cancel each other out.

Question 46

Which of the following is a scalar quantity?

Accepted Answer

Speed

Answer

Velocity

Answer

Acceleration

Answer

Force

Question 47

Which device measures distance traveled?

Accepted Answer

Odometer

Answer

Anemometer

Answer

Barometer

Answer

Stopwatch

Question 48

What is the standard unit of measurement for speed?

Accepted Answer

meters per second (m/s)

Answer

miles per hour (mph)

Answer

feet per second (ft/s)

Answer

kilometers per hour (km/h)

Question 49

An object moving with uniform velocity means it has:

Accepted Answer

Constant speed in a constant direction

Answer

Changing speed and changing direction

Answer

Constant speed but changing direction

Answer

Changing speed but constant direction

Question 50

Acceleration is the change in an object's:

Accepted Answer

Velocity

Answer

Speed

Answer

Time

Answer

Displacement

Question 51

According to Newton's first law of motion, an object at rest will stay at rest, and an object in motion will stay in motion at a constant speed and direction unless acted upon by:

Accepted Answer

An unbalanced force

Answer

Friction

Answer

Gravity

Answer

A balanced force

Question 52

Which of these DOESN'T directly affect how quickly an object speeds up or slows down?

Accepted Answer

Mass of the object

Answer

The length of time a force is applied

Answer

The strength of the force applied

Answer

The direction of the force

Question 53

A car travels 100 kilometers in 2 hours. What is its average speed?

Accepted Answer

50 km/h

Answer

100 km/h

Answer

200 km/h

Answer

25 km/h

Question 54

When a ball is thrown straight up in the air, at its highest point, what happens to its velocity?

Accepted Answer

It becomes zero

Answer

It decreases

Answer

It increases

Answer

It stays the same

Question 55

Which of the following describes a quantity that has both size (magnitude) and direction?

Accepted Answer

Velocity

Answer

Time

Answer

Mass

Answer

Speed

Question 56

If a car accelerates from rest at a constant rate, what will its speed-time graph look like?

Accepted Answer

A straight line that goes through the origin

Answer

A straight line that doesn't go through the origin

Answer

A curved line that goes through the origin

Answer

A curved line that doesn't go through the origin

Question 57

Which of these scenarios is an example of non-uniform motion?

Accepted Answer

A car slowing down to a stop at a traffic light

Answer

A ball rolling down a ramp at a steady speed

Answer

A pendulum swinging back and forth

Answer

A car driving on a straight road at a constant speed