The diagram above (Fig. 1.19) shows the speed-time graph of a car. If the car covered a total distance of 600m in 25s, calculate its maximum speed.

Physics Jamb, Waec, Neco Past Questions & Answers on Speed, Velocity and Acceleration

QUESTIONS 49: The diagram above (Fig. 1.19) shows the speed-time graph of a car. If the car covered a total distance of 600m in 25s, calculate its maximum speed. 

WAEC 2006 Ans: 30ms

SOLUTIONS 

Total distance s = 600m

Total time taken t, = 25s

But time taken to attain maximum speed= 5s

Hence Time t taken to attain maximum speed = 25-5 = 20s

Maximum speed v = ?

But speed= distance/time

∴ V = 600/20

v = 30m/s. ANSWER