Question

A bus starts to move from rest and attains an acceleration 4 m/s 2 in 20 seconds. Calculate its
final velocity.

Answer 1

Answer:

80m/s

Explanation:

Given:

a= 4m/s²

t= 20s

u(initial velocity)= 0

(since the bus starts from rest)

Now,

we know that v=u+at (first equation of motion)

v= 0+4(20)

v= 80 m/s