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7) A bowling ball rolled with a force of 15 N accelerates at a rate of 3 m/s2; a second ball rolled with the same force accelerates 4
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Answers ( )
Answer: Mass of the first ball is 5kg; Mass of second ball is 3.75kg
Explanation:
Given that:
Force of first ball = 15 N
Acceleration of first ball = 3 m/s2
Mass of first ball M1 = ?
Force of second ball = 15N (same force)
Acceleration of second ball = 4 m/s2
Mass of first ball M2 = ?
A) Since force is a product of mass of a substance by the acceleration by which it moves: Force = Mass x acceleration
For first ball, Force = M1 x A
15 N = M1 x 3 m/s2
M1 = 15N/3 m/s2
M1 = 5 kg
B) For second ball, Force = M2 x A
15 N = M2 x 4 m/s2
M2 = 15N/4m/s2
M2 = 3.75kg
Thus, the mass of the first ball is 5kg while the second ball is 3.75kg