Question

A car travels a distance of 100m with a constant acceleration and average velocity of 20m/s . If the final velocity acquired by the car is 25m/s , its initial velocity is ---------------------- a) 2 m /s b) 20 m /s c) 15 m /s d) 30 m/s

Answer 1

Answer:

Distance= 100m.

average velocity = 20m/sec.

and final velocity = 25 m/sec.

total velocity = 45 m/ sec.

now total initial velocity = 25 - 20 = 5.

initial velocity = Distance/ initial velocity (total).

= 100/5.

= 20.