Motion in Physics: Master Kinematics, Dynamics, and Energy

Question 1

Which of the following is NOT a unit of energy?

Accepted Answer

Newton-meter

Answer

Joule

Answer

Electronvolt

Answer

Watt-hour

Question 2

A car travels in a straight line with a constant velocity. It covers a displacement of 60 meters in a time of 10 seconds. Calculate the velocity of the car.

Accepted Answer

6 m/s

Answer

60 m/s

Answer

0.6 m/s

Question 3

A ball is launched straight up from the ground with an initial velocity of 10 meters per second. Ignoring air resistance, what will be the ball's velocity 1 second after it's launched?

Accepted Answer

9 m/s

Answer

1 m/s

Answer

5 m/s

Answer

11 m/s

Question 4

A 2000 kg car travels at 25 m/s and stops after 50 meters. Calculate the braking force.

Accepted Answer

12.5 kN

Answer

10 kN

Answer

15 kN

Question 5

Which of the following is a vector quantity in physics?

Accepted Answer

Velocity

Answer

Mass

Answer

Time

Answer

Energy

Question 6

An object is moving with a constant velocity of 5 m/s. What is the displacement of the object after 10 seconds?

Accepted Answer

50 m

Answer

5 m

Answer

10 m

Answer

100 m

Question 7

What is the unit of energy in the International System of Units (SI)?

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Coulomb

Question 8

A car travels a distance of 100 kilometers in 1 hour. What is the speed of the car in meters per second (m/s)?

Accepted Answer

25 m/s

Answer

10 m/s

Answer

50 m/s

Answer

100 m/s

Question 9

Which of the following forces is a non-contact force?

Accepted Answer

Gravity

Answer

Tension

Answer

Friction

Answer

Normal force

Question 10

Which of the following equations of motion relates displacement, velocity, and acceleration?

Accepted Answer

s = ut + 1/2 at²

Answer

v = u + at

Answer

a = v/t

Answer

v² = u² + 2as

Question 11

An object is moving with a constant velocity of 5 meters per second. What distance will it cover in 10 seconds?

Accepted Answer

50 meters

Answer

25 meters

Answer

75 meters

Answer

100 meters

Question 12

Which of the following is a non-conservative force?

Accepted Answer

Friction

Answer

Tension

Answer

Gravity

Answer

Normal force

Question 13

Which of the following represents the work done by a force?

Accepted Answer

Force × Displacement

Answer

Force × Velocity

Answer

Force × Acceleration

Answer

Force × Time

Question 14

A block with a mass of 2 kilograms is pushed along a frictionless surface by a force of 10 Newtons. Calculate its acceleration.

Accepted Answer

2 m/s²

Answer

5 m/s²

Answer

10 m/s²

Answer

15 m/s²

Question 15

A student records the distance traveled by a ball rolling down a slope as a function of time. Which graph best represents motion with constant acceleration?

Accepted Answer

Distance versus Time squared (quadratic)

Answer

Distance versus Time (linear)

Answer

Distance versus Time cubed (cubic)

Answer

Distance versus Time to the power of 4 (quartic)

Question 16

Which of the following is considered a scalar quantity?

Accepted Answer

Distance

Answer

Velocity

Answer

Acceleration

Answer

Force

Question 17

Identify the SI unit of energy:

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Horsepower

Question 18

State the formula for calculating kinetic energy.

Accepted Answer

E = ½mv²

Answer

E = mc²

Answer

E = Fd

Answer

E = mgh

Question 19

Identify the non-conservative force among the following:

Accepted Answer

Friction

Answer

Gravity

Answer

Tension

Answer

Elastic force

Question 20

When a force moves an object in a circular path, the work done by that force is:

Accepted Answer

Zero

Answer

Positive

Answer

Negative

Answer

Depends on the force

Question 21

An object is moving at a constant velocity. Which of the following statements is correct?

Accepted Answer

Its acceleration is zero.

Answer

Its velocity is zero.

Answer

Its speed is zero.

Answer

Its displacement is zero.

Question 22

A ball is launched vertically upwards with an initial velocity of 10 m/s. What will be its velocity at the highest point of its trajectory?

Accepted Answer

0 m/s

Answer

5 m/s

Answer

10 m/s

Answer

-10 m/s

Question 23

A stone is dropped from a height of 50 m. What is its velocity just before it hits the ground?

Accepted Answer

31.3 m/s

Answer

40 m/s

Answer

10 m/s

Answer

20 m/s

Question 24

A projectile is launched at an angle of 30 degrees to the horizontal with a velocity of 15 m/s. What is the horizontal component of its velocity?

Accepted Answer

13 m/s

Answer

5 m/s

Answer

15 m/s

Answer

10 m/s

Question 25

A car is traveling around a circular track with a radius of 200 m. If the coefficient of friction between the tires and the road is 0.6, what is the maximum safe speed the car can travel without skidding?

Accepted Answer

24.2 m/s

Answer

12.1 m/s

Answer

30 m/s

Answer

40 m/s

Question 26

A car accelerates uniformly from rest to a speed of 20 meters per second in 5 seconds. What is the acceleration of the car?

Accepted Answer

4 m/s²

Answer

2 m/s²

Answer

5 m/s²