Question

a 40kg mass is initially at rest on a rough bench and a 10kg mass is attached to it. a frictional force of 20N opposes the motion of the 40kg mass. what is the speed of the 10kg mass 2s after the masses starts moving?​

Answer 1

Answer:

The speed will be 15 km/h.

Explanation:

This is because when force applied is 20N and object is 10 kg it will be 20 + 10 = 30.

30 ÷ 2 = 15.

So the answer is 15 km/h

Answer 2

Answer:

Explanation:

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