A15 kg box is accelerated from 15m/s to 30 m/s in 36 seconds. what is the net force exerted on the box?
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Ответ:
Acceleration = (30 m/s - 15 m/s) / (36 sec) =
(15 m/s) = (36 sec) = 5/12 m/s²
Force = (mass) x (acceleration)
Force = (15 kg) x (5/12 m/s²) = 6.25 newtons (about 1.4 pounds)
Ответ:
so
m= 2 kg
a= 3 m/s2
F= 2 kg * 3 m/s2 = 6 N
The correct answer is D