Question

How much time does it take for a truck to slow down if its acceleration is -15m/s2 and the change in velocity is -30m/s

Answer 1

2s

Step-by-step explanation:

Given parameters:

Acceleration of the truck = 15m/s²

change in Velocity = 30m/s

Unknown:

Time taken for the body to slow down = ?

Solution:

Acceleration is the rate of change of velocity ;

Acceleration =
`(change in velocity)/(time)`

time =
`(change in velocity )/(acceleration)`

Now insert the parameters and solve;

time =
`(30)/(15)` = 2s