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3 years ago

A forcue of 186 N acts on a 7.3-kg bowling ball for 0.40 s. what is the chanhe in velocity of the bowling ball

2 answers:

3 0

As we know that Force = mass * acceleration.
Here a force of 186 N acting on 7.3 kg ball will create acceleration = 186/7.3 = 25.48 m/s2
Also, change in velocity can be found as, acceleration multiplied by time it is acting on object.
Therefore, change in velocity = 24.48 * 0.4 = 10.19 m/s

motikmotik3 years ago

3 0

Given are: Force = 186 N; Mass = 7.3 Kg; time = 0.40 s Initial Velocity Vi = 0
Final Velocity Vf = ?
Unknown: Change in velocity or acceleration
F =ma; but a = Vf - Vi/t Solve for Vf or Final velocity
therefor F = m(Vf-Vi/t) Ft = m(Vf - Vi/t) But Vi = 0
Vf = (186 N)(0.40 S)/7.3 Kg answer Vf = 10.2 m/s
Solving for acceleration or change in velocity
a = Vf - Vi/t
a = 10.2 m/s - 0/0.4s therefore change in velocity a = 25.5 m/s²

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