Question

If an object has a mass of 4 kg and an acceleration of 8 m/s2, what is the force this object exerts?

Answer 1

The force acting on the object will be 32 N.

Newton's second law of motion states that, "the force is equal to the change in momentum per change in the time". The mathematical form of the law is given below.

$F = \frac{dP}{dt}=\frac{d(mv)}{dt}=m\frac{dv}{dt}=ma$

Where P = momentum, t = time, m =mass, v = velocity, a = acceleration and F = force.

The mass of the object is 4 kg and acceleration is 8 m/s^2. Substitute the values in the equation and we will get the force.

F = ma

F = 4 kg * 8 m/s^2

F = 32 kg.m/s^2

F = 32 N

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