Question

a body moving with 20m/s slow down to 10m/s . Find acceleration and time taken in covering 20 m .

Answer 1

Answer:

Explanation:

initial velocity (u) = 20m/s

final velocity . (v) = 10m/s

distance=20m

time=distance/speed

=20/10

=2s

acceleration ( a ) = (v-u)/t

=(10-20)/2

=-10/2

= . -5

therefore, acceleration is $-5m/s^2$

and time taken is 2s