JAMB - Physics (2010 - No. 3)
A car moves with an initial velocity of 25 ms-1 and reaches a velocity of 45 ms-1 in 10s. what is the acceleration of the car?
2 ms-2
5 ms-2
20 ms-2
25 ms-2
説明
Acceleration = (increase in velocity)/time taken
= (45 - 25)/10 = (20)/10 = 2ms-2
= (45 - 25)/10 = (20)/10 = 2ms-2