# An object is moving straight with an initial velocity of 48 m/s and undergoing a constant negative acceleration of 1.5 m/s^2. In what time will it reverse the direction of motion?

2
Log in to add a comment

Log in to add a comment

So just before reversing, the velocity will be 0.

Initial velocity = 48 m/s

final velocity = 0

acceleration= -1.5 m/s²

v= u + at

⇒0 = 48 - 1.5t

⇒ t = (-48) / (-1.5) =

At 32s, it will be 0. So velocity will be reversed just after 32s.