Science Chapter 9 Quiz
Test Your Knowledge of Forces and Motion
Challenge yourself with our engaging Science Chapter 9 Quiz! Perfect for students looking to reinforce their understanding of forces, motion, and momentum.
Key Features:
- 10 Multiple Choice Questions
- Score as you go!
- Understand core physics concepts
1. What is the S.I. Unit of force?
Kg m/s
Kg m/s²
Newton
Newton meters
What do we get by the product of mass and velocity?
Force
Inertia
Newton
Momentum
A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goalkeeper to-
Exert large force on the ball
Increases the force exerted by the ball on hands
Increase the rate of change of momentum
Decrease the rate of change of momentum
4. In a rocket, a large volume of gases produced by the combustion of fuel is allowed to escape through its tail nozzle in the downward direction with the tremendous speed and makes the rocket to move upward. Which principle is followed in this take off of the rocket?
Moment of inertia
Conservation of momentum
Newton’s third law of motion
Newton’s law of gravitation
5. Which of the following statements is not correct for an object moving along a straight path in an accelerated motion?
Its speed keeps changing
Its velocity always changes
It always goes away from the Earth
A force is always acting on it
6. What is the formula for Second Law of Motion (momentum)? F
F = kma
F = mv - mu
P = mv
F = ma
7. A motor car is moving with a velocity of 108 km/hr and it takes 4 seconds to stop after the breakes applied. Calculate the force exerted by the brakes on the motor car if its mass along with passengers is 1000 kg.
-7000 N
-7500 N
-6500 N
-6000 N
8. Which of the following has more inertia?
A rubber ball
A stone
None of these
Both of these
9. What is the correct definition of momentum?
A tendency to do nothing or to remain unchanged
The quantity of motion of a moving body, measured as a product of its mass and velocity
None of these
Both of these
10. A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is-
Accelerated
Uniform
Retarded
Along circular tracks
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