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Question:

A 20 kg object is dropped from the top of a building and is accelerating at 5 m/s/s. What is the force acting on the object?

A 100 kg x m/s/s
Explaination

Using the formula force = mass x acceleration, you can plug in the information to solve this problem. So 20 kg x 5 m/s/s = 100 kg x m/s/s.