Question

20. A car starts from rest and acquire a velocity of 54
km/h in 2 sec. Find (i) the acceleration (ii) distance
travelled by car, assume motion of car is uniform.
​

Answer 1

Explanation:

u=0

v=54km/h=54000m/3600s=15m/s

t=2

a=v-u/t

a=15-0/2

a=7.5m/sq.s

s=ut+1/2a sq.0(tl

s=0×2 +1/2×15/2×2×2

s=0+15

s=15m