Page 22 - SP015 Past Years PSPM Chapter 1 -5 Ver.2020

PHYSICS PSPM SEM 1 1999 - 2017

UPS 2011/2012 SF016 No. 2(a)

6. (a) State ONE difference and ONE similarity between momentum and impulse.
[2 m]

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(b) A rubber ball of mass 20 g moving at a velocity of 30 m s hits a wall and
bounces back with the same velocity. Calculate the impulse. [3 m]

PSPM 2011/2012 SF016/2 No. 3(c)

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7. An 8 g bullet moving at 50 m s strikes a wooden block. The bullet undergoes uniform
deceleration and stopped 12 cm inside the block. Calculate the

(a) time taken for the bullet to stop. [2 m]

(b) impulse on the block. [2 m]
(c) average force experienced by the block. [2 m]

UPS 2014/2015 SF016 No. 2(b)

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8. A 2 kg ball moving with an initial speed of 40 m s hits a wall and rebounds with the
same speed. Calculate the

(a) impulse of the ball. [3 m]

(b) magnitude of the force between the wall and the ball if the contact time is 0.8 s
[3 m]

UPS 2015/2016 SF016 No. 2(a)(ii)

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9. A 2 kg ball moving at speed 5 m s hits a wall. The force exerted by the wall on the ball
is 100 N. If the collision is perfectly elastic, calculate the contact time between the ball
and the wall. [3 m]

Principle of Conservation of Linear Momentum

PSPM 2016/2017 SF016/2 No. 3(a)

10. State the principle of conservation of momentum. [1 m]

PSPM 2007/2008 SF017/2 No. 10(a)

11. Explain the principle used to determine whether a collision between two bodies is
elastic or inelastic. [2 m]

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