Question

A car starts from rest and acquires velocity of 54km/h in 2 seconds. Find acceleration and distance travelled by car

Answer 1

Explanation:

a car is starting from a rest which gives that the initial veloity =0

so, now

initial velocity = 0

final velocity = 54km/h

time taken = 2 seconds

formula to find accleration is

change in velocity / time

or

initial velocity - final velocity/ time taken

try to solve half the answer in here

Answer 2

Explanation:

vi=0

vf=54km/h=54*1000/3600=15m/s

t=2

a=?

S=?

vf=vi+at

vf-vi/t=a

a=15-0/2

a=7.5m/s2

2aS=vf2-vi2

2(7.5)S=(15)^2-(0)^2

S=225-0/15

S=15m