A car is travelling at 54 km/hr.if it's velocity increase to 72 km/hrs in 5 sec . find the acceleration of car in SI unit.
jouhou:
acceleration = change in velocity /time taken
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time = v - u / t . 72 km /h =72 ×5 /18 m/s =20m /s
54 km / h =54 × 5 / 18 m / s=15m/s.
acceleration =20 -15 /10 =5 /10 =0.5 m/s(square) and use formula v (square ) = u (square) + 2 as
ok
54 km / h =54 × 5 / 18 m / s=15m/s.
acceleration =20 -15 /10 =5 /10 =0.5 m/s(square) and use formula v (square ) = u (square) + 2 as
ok
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