A 10-kg block is pushed across a horizontal surface with a horizontal force of 30 N against a friction force of 10 N. The acceleration of the block is

A) 1 m/s2.
B) 2 m/s2.
C) 5 m/s2.
D) 10 m/s2.
E) none of the above


Answer: B

Physics & Space Science

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