Question

find acceleration of a body whose initial and final velocity is 20 ms and10 ms respectively if the cange in velocity takes place in 4 sec

Answer 1

acceleration=final velocity-initial velocity/time

=v-u/t

=10-20/4

= -10/4= -2.5

hope it helps

Answer 2

v1=20 v2=10 a=(v2-v1)/t=(-10)/4=-2.5m/s²