Question

A sports car starting from rest accelerates uniformly at 2m/s^2,what is its speed after 10s?how far has it traveled after 15s?and after how long will the car be 500m from its starting point?

show the sulotion

Answer 1

v-vi=at
v-0=(2m/s^2)10=20m/s^2
after t=15sec:
s=1/2 vt
s=1/2 (20m/s)15s=150m
and using s=1/2 vt
500m= 1/2 (20)t
500/10=t=50 sec

Answer 2

v-vi=at
v-0=(2m/s^2)10=20m/s^2
after t=15sec:
s=1/2 vt
s=1/2 (20m/s)15s=150m
and using s=1/2 vt
500m= 1/2 (20)t
500/10=t=50 sec