Page 8 - SP015 Past Years PSPM Chapter 1 -5 Ver.2020

PHYSICS PSPM SEM 1 1999 - 2017

PSPM 2012/2013 SF016/2 No. 2(a)

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22. A train initially at rest, accelerates uniformly until its speed reaches 8 m s in 25 s. For
the next 200 s, the train continues its journey with constant speed, before it slows down
uniformly and comes to a complete stop in 20 s.

(a) Sketch a labeled graph of speed versus time for the whole journey. [2 m]

(b) Calculate the accelerations of the train for the three parts of the journey. [4 m]

(c) Determine the total distance travelled by the train. [2 m]

PSPM 2013/2014 SF016/2 No. 2(a)

23. v (m s )
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15

8 45 t (s)
0 24
FIGURE 2.7

FIGURE 2.7 shows a velocity-time graph of a motion along a straight line.

(a) Calculate the average velocity and average acceleration of the entire motion.
[3 m]

(b) Sketch a labelled displacement-time graph of the motion. [4 m]

UPS 2015/2016 SF016 No. 1(a)(i)

24. A car is initially at rest at t = 0 s. It then accelerates through three gear changes with the
following velocities:

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11.1 m s at t = 5 s, 16.7 m s at t = 10 s and 20.5 m s at t = 15 s.

Sketch the acceleration-time graph of the car. [2 m]

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