Question

a car travels at a constant velocity of -30 m/s for 160 m. How much time does it take a car to travel the 160 m

Answer 1

We have equation of motion
`S = ut + (1)/(2) at^2`, here S = displacement, u = initial velocity, t is the time taken and a is the acceleration.

In this case displacement = 160 m

Initial velocity = 30 m/s

Acceleration =
`0 m/s^2`

Substituting we will get
`160 = 30 *t + (1)/(2)*0* t^2\\ \\ 160 =30t\\ \\ t = 160/30\\ \\ t = 5.33 seconds`

So car will take 5.33 seconds to travel 160 m.