XPsmithanaMassa XPsmithanaMassa

05-05-2016
Biology

Answered

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

Verified Answer :

JcAlmighty JcAlmighty

11-05-2016

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.

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