Question

A 5 kg skateboard moves at 7 m/s²

. What is the force of the skateboard?
2 m/s
2
12
7 m/s
35 N

Answer 1

The answer is 35 N.

Force is mass times acceleration: F = m * a

The force is unknown: F=? The unit of force is N (N = kg * m/s²).

But, we know:
mass: m = 5 kg
acceleration: a = 7 m/s²

So, the force is:
F = 5 kg * 7 m/s²
F = 35 kg * m/s²
F = 35 N.