Question

a car has a mass900kg.it accelerates from rest at a rate of 1.2m/s2 .Calculate the time taken reach a velocity of 30m/s

Answer 1

Answer:

m = 900 kg

u = 0

a = 1.2 m/s²

v = 30 m/s

Explanation:

t = ?

we know by Newton's 1 st Kinematical equation we have,

v = u + at

30 = 0 + 1.2 t

1.2t = 30

t = 30/1.2

t = 25 s