After initially picking the stone up off the ground, a man exerts a 148 N force upwards on a 10 kg stone. What is the acceleration of the stone?

5m/s²

Explanation:

The force exerted on an object is calculated using the formula ;

F = ma

Note that the upward force (F) is 148N

Where;

F = force (N)

m = mass (kg)

a = acceleration (m/s²)

The downward force towards gravity is F' = mg

F' = 10 × 9.8m/s²

F' = 98N

Net force (F - F') = m × a

148 - 98 = 10 × a

50 = 10a

a = 50/10

a = 5m/s²

v=ir = 3x15 =45 v

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