Answer to Question #342284 in Physics for paula boodoo

Question

A car starts from rest and accelerates at a constant rate, reaching a speed of 5.0 m s-^ in 10.0 s. 

It then travels at this speed for 30.0 s before coming to a stop in another 5.0 s.

(a) Plot the velocity-time graph of the car.

(b) Find the total displacement of the car.

Answer 1

(a)

(b)

$$d=\rm\:Area=\frac{30+45}{2}*5=187.5\:\rm m$$