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Selina Solutions Class 9 Physics Solutions for Exercise 2C in Chapter 2 - Chapter 2 Motion In One Dimension

Question 9 Exercise 2C

A body, initially at rest, starts moving with a constant acceleration 2m/s^2 . Calculate: (i) the velocity acquired and (ii) and the distance travelled in 5s.

Answer:

Given: a= 2m/s^2 , u=0m/s, v=?; t=5s; s=?

(i) v=u+at

= 0 + 2x5

v = 10m/s

(ii) s =ut+ ½ at2

= 0(5) + ½ (2)(5)2

= 0 + 25

Distance travelled = 25m

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