Answer:
360 N.
The force will not be large enough to lift a person of mass 60 kg
Explanation:
Force: This can be defined as the product of mass and acceleration. The S.I unit of Force is Newton (N).
Force is expressed as
F = m(v-u)/t ...................... Equation 1
Where F = Average force on the ball, m = mass of the ball, v = final velocity, u = initial velocity, t = time.
Given: m = 0.06 kg, v = 60 m/s, u = 0 m/s(the ball was held still on the hand before serve), t = 0.01 s.
Substitute into equation 1
F = 0.06(60-0)/0.01
F = 360 N.
Hence the force = 360 N.
force required to lift a person of mass 60 kg = mg
= 60×9.81
= 588.6 N.
The force will not be large enough to lift a person of mass 60 kg
