IGCSEPhysicsCIETopic Questions1. Motion, Forces & EnergyMomentum

Momentum (CIE IGCSE Physics)

Topic Questions

3 hours29 questions

Select a question set to download for
Momentum

Select an answer set to view for
Momentum

Easy
Medium
Hard
11 mark

Extended tier only

Which of these is the correct definition for momentum and its unit?

 

Definition

Unit

A

p = m ÷ v

N/m

B

v = p × m

kg m/s

C

v = p ÷ m

N/kg

D

p = m × v

kg m/s

    Choose your answer

    Did this page help you?

    21 mark

    Extended tier only

    Which of the following terms and equations are equivalent to the change in an object's momentum?

     

    		 Term

    Equation

    A.

    		 Force F space equals I over t

    B.

    		 Impulse I space equals space F t

    C.

    		 Force F space equals space m a

    D.

    		 Impulse I space equals space fraction numerator increment p over denominator t end fraction

      Choose your answer

      Did this page help you?

      31 mark

      Extended tier only

      A ball with mass of 5.0 kg is moving with a velocity of 3.0 m/s.

      What is the momentum of the ball?

      • 0.6 kg m/s

      • 1.70 kg m/s

      • 15 kg m/s

      • 15 000 kg m/s

      Choose your answer

      Did this page help you?

      41 mark

      Extended tier only

      A ball with has momentum = 30 kg m/s hits a stationary ball with momentum = 0  kg m/s so that they both move off. 

      What is the total momentum of the two balls following the collision?

      • 0  kg m/s

      • 3  kg m/s

      • − 30  kg m/s

      • 30  kg m/s

      Choose your answer

      Did this page help you?

      51 mark

      Extended tier only

      A footballer kicks a ball with a force of 1500 N. Her foot is in contact with the ball for 1.4 seconds. 

      What is the impulse on the ball?

      • 1070 Ns

      • 2100 Ns

      • 3000 Ns

      • 4200 Ns

      Choose your answer

      Did this page help you?

      11 mark

      Extended tier only

      A rollercoaster speeds along a track with considerable momentum. 

      If a different rollercoaster travels at four times the speed but has half as much mass, its momentum is would be:

      • Zero

      • Twice as much

      • Four times as much

      • Unchanged

      Choose your answer

      Did this page help you?

      21 mark

      Extended tier only

      A bullet is shot from a gun. The bullet moves forward and the gun moves in the opposite direction. Which of the following statements is true?

      • They move with the same velocity in opposite directions.

      • The bullet moves with a slower velocity due to its mass.

      • The total momentum of the system is zero.

      • The total momentum of the system does not stay constant before and after the collision.

      Choose your answer

      Did this page help you?

      31 mark

      Extended tier only

      A gas molecule strikes the wall of a container with a speed of 200m/s. It rebounds with the same kinetic energy as it had before striking the wall.

      q3-medium-mcq-1-6--momentum-cie-igcse-physics

      What is its final velocity?

      • 100 m/s

      • - 100 m/s

      • 200 m/s

      • - 200 m/s

      Choose your answer

      Did this page help you?

      41 mark

      Extended tier only

      Padded dashboards in cars are safer in an accident than non-padded ones because a passenger hitting the dashboard would experience

      • Lengthened time of contact

      • Shorter time of contact

      • Decreased impulse

      • Increased momentum

      Choose your answer

      Did this page help you?

      51 mark

      Extended tier only

      After a car crash the car driver's airbag inflates. The airbag then deflates when it is hit by the driver’s head. 

      How does an airbag reduce the risk of injury?

      • Collision time increases, which increases the rate of change of momentum.

      • Collision time increases, which reduces the rate of change of momentum.

      • Collision time decreases, which increases the rate of change of momentum.

      • Collision time decreases, which reduces the rate of change of momentum .

      Choose your answer

      Did this page help you?

      11 mark

      Extended tier only

      A dummy is used in a crash test to investigate the safety of a new car. The deceleration of the dummy and the passenger compartment is measured.

      q1-hard-mcq-1-6--momentum-cie-igcse-physics

      The deceleration of the dummy is less than the deceleration of the passenger compartment. 

      Why is this of benefit for the safety of the passenger?

      • Seat belts, crumple zones and airbags all absorb energy from the crash

      • The crash happens quickly so the passenger doesn’t feel anything

      • The force of impact on the passenger, and therefore harm, is reduced

      • The time over which the collision happens is elongated for the passenger

      Choose your answer

      Did this page help you?

      21 mark

      Extended tier only

      A passenger of mass 90 kg is involved in a minor car crash.

      q2-hard-mcq-1-6--momentum-cie-igcse-physics

      The car approaches a solid barrier at 32 m/s. It crashes into the barrier and stops in 0.2s.

      Determine the impulse that must be applied to the car to bring it to rest.

      • 2.8 Ns

      • 14 Ns

      • 580 Ns

      • 2900 Ns

      Choose your answer

      Did this page help you?

      31 mark

      Extended tier only

      An object of mass 150 kg accelerates from a velocity of 5 m/s to a velocity of 10 m/s in the same direction.

      What is the impulse provided to cause this acceleration?

      • 750 Ns

      • 1500 Ns

      • 2250 Ns

      • 7500 Ns

      Choose your answer

      Did this page help you?

      41 mark

      Extended tier only

      During a paintball fight, a paint pellet of mass 150g hits a stationary target with a speed of 220m/s. It takes 0.025s from the moment the pellet comes into contact with the wall until it flattens onto the wall.

      What is the force exerted as a result of the paintball “splat”?

      • 1.3 x 103 N

      • 33 N

      • 1.3 x 106 N

      • 33 x 103 N

      Choose your answer

      Did this page help you?