Question

a car moving with a velocity of 10 and with uniform accereleration gains a velocity of 30 ms-1 after travelling a distance of 4km the time taken is

Answer 1

Time = Distance / speed

Speed = change in speed

Change in speed = Final speed - initial speed

Final speed = 30m/s

Initial = 10

Δspeed = 30 - 10 = 20m/s

Distance = 4 × 1000 = 4000 m

Time = 4000 / 20 = 200 seconds

= 200 seconds