Question

a car starts from rest and attains a velocity of 18 km/h in 2 s find its acceleration in s 1 units

Answer 1

Answer:

2.5 m/s²

Explanation:

Initial velocity (u) =0 m/s

final velocity (v) = 18 km/h

[convert value of 'v' into SI unit]

therefore v =18 ×(5/18) m/s

=5 m/s

time taken(t) =2 s

acceleration(a)=(v-u)/t

=(5-0)/2

=5/2

=2.5 m/s²

Answer 2

Answer:

2.5

Explanation:

v=u+at

5=0+a×2

a=5/2

acceleration remain constant if applied force not depend on time