5 A truck travelling at 25 m/s puts on its brakes for 4 s. This produces an acceleration of –2 m/s. What is the truck's velocity after braking?

The truck's velocity after braking = 17m/s.

Explanation:

Given: Initial velocity(i) = 25 m/s

Time(t)  = 4s

Acceleration(a) = -2 m/s ²

We use the following formula to compute final velocity (v):

Hence, the truck's velocity after braking = 17m/s.

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer