Question

A car travels with initial velocity of 30m/s for 20 mins with a final velocity of 15m/s . How far does it travel ? What is the initial velocity of the phase before the second phase ​

Answer 1

Explanation:

8 s

Given Final velocity (v) = 50 m/s

Initial velocity (u) = 30 m/s

Acceleration (a) = 2.5 m/s

2

We know v = u + at

∴ 50 = 30 + 2.5 t

⇒ 50 - 30 = 2.5 t

⇒

2.5

20

= t or 8 = t

∴ Time taken to accelerate = 8 seconds

thank you