Answer:
The magnitiure of the force of A on B = 50 N
Explanation:
According to Newton's law of motion,
F = ma
But the m = sum of the masses of block A and block B = 3 + 15 = 18 kg
60 = 18a
a = 3.33 m/s²
This means the two blocks move with the same acceleration, a.
But according to Newton's third law of motion, action and reaction are equal and opposite.
So, the force of A on block B = force of B on block A = mass of block B × acceleration = 15 × 3.33 = 50 N
