Question

Q.30
A body starting from rest moves with a
constant acceleration. It moves a distance
S1in first 5 seconds and a distance s2 in
next 5 seconds. Prove that As, = 3s1

Q.31
An engine is moving with a velocity 44 m/s.
After applying the brakes, it stops after
covering a distance of 121 m. Calculate
retardation and time taken by the engine
to stop.​

Answer 1

Answer:

it is very simple..

q.31..initial velocity 44m/s

s 121m

Answer 2

Answer:

ans of 31 is retardation is 8m/s^2 and time to stop is 5.5 second

Explanation: