Question

plzz answer those blue questions!

Answer 1

1. when the rate of speed of body in particular direction is changing uniformly (fixed rate ) then it is called uniform accn.
. when the rate of speed of body in particular direction is changing non uniformly (not fixed rate ) then it is called non uniform accn.
2. v
u=80mh/h=22.22m/s
v=60km/h=16.66m/s

t=5s

a=v-u/t
16.66-22.22/5
=-1-112m/s^2
3. u=0
v=40km/h=11.11m/s

t=10min=600s

a=v-u/t
11.11-0/600
0.0185m/s^2