Theme A : Space Time and Motion

Space, Time and Motion

Questions Attempted 0/2

Space, Time and Motion

Available time 20 Minute(s)

The kinetic energy of the car is unchanged after the collision.

Two balls, X and Y, move along a horizontal frictionless surface.

Theme A : Space Time and Motion

00:00

Available time 20 Minute(s)

01. Question

Level Easy

Maximum Mark 7

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(a) State the law of conservation of linear momentum

[Marks: 3]

A toy car crashes into a wall and rebounds at right angles to the wall, as shown in the plan view.

The graph shows the variation with time of the force acting on the car due to the wall during the collision.

The kinetic energy of the car is unchanged after the collision. The mass of the car is 0.80 kg.

(b) (i) Determine the initial momentum of the car.

[Marks: 2]

(b) (ii) Deduce the average acceleration of the car before it rebounds.

[Marks: 2]

End Test