Newton's Laws of Motion: Interactive Learning Quizzes for Engineering Students

Question 1

According to Newton's first law of motion, an object at rest will remain at rest unless acted upon by an external unbalanced force.

Accepted Answer

True

Answer

False

Question 2

Newton's second law of motion states that the acceleration of an object is inversely proportional to its mass and directly proportional to the net force acting on it.

Accepted Answer

True

Answer

False

Question 3

A car of mass 1200 kg accelerates uniformly from rest to a speed of 20 m/s in 6 seconds. Calculate the force acting on the car.

Accepted Answer

4000 N

Answer

2000 N

Answer

1000 N

Answer

500 N

Question 4

The coefficient of friction between two surfaces is a dimensionless quantity with a typical range between:

Accepted Answer

0 and 1

Answer

0 and 10

Answer

0 and 100

Answer

0 and 1000

Question 5

The law of conservation of momentum states that the total momentum of an isolated system remains constant.

Accepted Answer

True

Answer

False

Question 6

Which statement best describes Newton's first law of motion?

Accepted Answer

An object at rest stays at rest, and an object in motion stays in motion at a constant velocity unless acted upon by an outside force.

Answer

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

Answer

For every action, there is an equal and opposite reaction.

Answer

The momentum of an isolated system stays constant.

Question 7

Which of the following is not a contact force?

Accepted Answer

Gravitational force

Answer

Friction

Answer

Normal force

Answer

Tension

Question 8

A 10 kg box sits motionless on a horizontal surface with a 0.4 coefficient of static friction. What minimum force is needed to start moving the box?

Accepted Answer

40 N

Answer

10 N

Answer

25 N

Answer

60 N

Question 9

Which is the SI unit of force?

Accepted Answer

Newton

Answer

Joule

Answer

Watt

Answer

Pascal

Question 10

Which of the following precisely states Newton's first law of motion?

Accepted Answer

An object at rest will remain at rest, and an object in motion will continue moving at the same speed and along the same straight line unless acted upon by a net external force.

Answer

The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

Answer

For every action, there is an equal and opposite reaction.

Answer

An object in motion will continue moving at a constant velocity.

Question 11

To bring a 2.5 kg object moving at 10 m/s to rest within 3 seconds using a constant force, what force is required?

Accepted Answer

16.7 N

Answer

8.3 N

Answer

25.0 N

Answer

33.3 N

Question 12

In accordance with Newton's third law of motion, when you push a wall, the wall pushes back with:

Accepted Answer

An equal force

Answer

A greater force

Answer

A smaller force

Answer

No force

Question 13

The correct SI unit of force is:

Accepted Answer

Newton

Answer

Joule

Answer

Watt

Answer

Kilogram

Question 14

A projectile is launched vertically upward with a velocity of 25 m/s. What is its maximum height?

Accepted Answer

31.25 m

Answer

12.5 m

Answer

25 m

Answer

37.5 m

Question 15

State Newton's first law of motion:

Accepted Answer

An object will remain at rest or continue moving at a constant velocity unless acted upon by an external net force.

Answer

The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

Answer

For every action, there is an equal and opposite reaction.

Answer

The energy of an isolated system remains constant.

Question 16

Which of the following factors solely does NOT affect the period of oscillation of a simple pendulum?

Accepted Answer

Amplitude of oscillation

Answer

Length of the pendulum

Answer

Mass of the pendulum bob

Answer

Acceleration due to gravity

Question 17

Which of the following is the unit of force in the International System of Units (SI)?

Accepted Answer

Newton

Answer

Kilogram

Answer

Joule

Answer

Watt

Question 18

A car A moving at 30 m/s collides head-on with a stationary car B of equal mass. What is the velocity of each car immediately after the collision?

Accepted Answer

15 m/s

Answer

0 m/s

Answer

30 m/s

Answer

45 m/s

Question 19

If an object is moving with constant velocity, Newton's First Law implies that:

Accepted Answer

The object has zero net force acting upon it

Answer

The object is subject to unbalanced forces

Answer

The object is subject to balanced forces

Answer

The object is accelerating

Question 20

A force of 100 N is applied to an object of mass 20 kg. What is the object's acceleration?

Accepted Answer

2 m/s^2

Answer

5 m/s^2

Answer

10 m/s^2

Answer

20 m/s^2

Question 21

Which graph represents the relationship between force and acceleration for an object with constant mass?

Accepted Answer

A linear relationship passing through the origin

Answer

A linear relationship with a non-zero intercept

Answer

A parabolic relationship

Answer

A circular relationship

Question 22

A car is traveling down a hill. The force of gravity acting on the car is:

Accepted Answer

Can be greater than, equal to, or less than the force of friction depending on the incline

Answer

Always greater than the force of friction

Answer

Always equal to the force of friction

Answer

Always less than the force of friction

Question 23

Which of the following is not a force?

Accepted Answer

Speed

Answer

Gravity

Answer

Friction

Answer

Weight

Question 24

What is the SI unit of force?

Accepted Answer

Newton

Answer

Joule

Answer

Watt

Answer

Meter

Question 25

A ball is thrown vertically upwards. At its highest point, its velocity is:

Accepted Answer

Zero

Answer

Maximum

Answer

Minimum

Answer

Constant

Question 26

Identify the direction of the frictional force between two surfaces in contact.

Accepted Answer

Opposite to the direction of motion

Answer

Parallel to the direction of motion

Answer

Perpendicular to the direction of motion

Answer

In the same direction as the motion

Question 27

A projectile is launched vertically upward with an initial velocity of 15 m/s. Determine its maximum height.

Accepted Answer

11.25 m

Answer

15 m

Answer

30 m

Answer

60 m

Question 28

A uniform rod of length 'L' is pivoted at one end. If a mass 'm' is suspended from the other end, calculate the torque about the pivot point.

Accepted Answer

mgL

Answer

mgL/2

Answer

mgL/4

Answer

2mgL

Question 29

State the condition for an object to be in equilibrium.

Accepted Answer

Both net force and net torque are zero.

Answer

Net force is zero.

Answer

Net torque is zero.

Answer

Neither net force nor net torque is zero.

Question 30

A pendulum oscillates with a period of 1.5 seconds. Calculate its frequency.

Accepted Answer

0.67 Hz

Answer

1 Hz

Answer

1.5 Hz

Answer

2 Hz