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1. Motion
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Q33 of 139 Page 41

A body starting from rest travels with uniform acceleration. If it travels 100 m in 5 s, what is the value of acceleration?

d = 100m

t = 5 sec


u = o m/s


a = 8 m/s2


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32

The velocity-time graph for part of a train journey is a horizontal straight line. What does this tell you about

(a) the train’s velocity, and


(b) about its acceleration?

33

Explain the meaning of the following equation of motion :

v = u + at


where symbols have their usual meanings.

34

Derive the formula : v = u + at; where

the symbols have usual meanings.

34

A bus was moving with a speed of 54 km/h. On applying brakes it stopped in 8 seconds. Calculate the acceleration.

Questions · 139
1. Motion
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