Question

A 10 kg block is pushed with a constant horizontal force of 20 N against a constant horizontal frictional force of 10 N.
What is the acceleration of the block?
1. 2 m/s2
2.5 m/s2
3. Zero
4. None of these
5. 1 m/s2
6. 10 m/s2
7. Insufficient information is provided.

Answer 1

Answer:

1 m/s2

Explanation:

The net force on the block is 20 N-10 N in the direction of its acceleration, so by Newton’s law F=Ma

a=10N/10kg

=1 m/s2