Question

A car starts from rest after 5secs and it accelerates uniformly for 10secs before attaining a speed of 20m/s.if it maintains this speed for the next 5secs.what is the total distance covered

Answer 1

Find the distance the cart acquired during 10 s of accelerated motion:

$$d=\frac{vt}{2}=100\text{ m}.$$

Then the distance during 5 seconds of uniform motion at 20 m/s:

$$x=uT=100\text{ m}.$$

Thus, the total distance is 200 m.