Question

A car attains a velocity of 72km/hour in 10 seconds starting from rest.find a-Accelaration b-Average Velocity c-Distance travelled

Answer 1

intial velocity =0
final velocity=72 Km/Hr=20m/sec
time =10sec
so,
v=u+at
20=0+a*10
a=2

now,
s=u*t+1/2(a*t*t)
s=0+1/2(2*10*10)
s=100m

Answer 2

intial velocity =0
final velocity=72 Km/Hr=20m/sec
time =10sec
so,
v=u+at
20=0+a*10
a=2