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

Question

Quizplus · Accepted Answer

The net force acting on the block is calculated as follows:
Net force = Applied force - Frictional force
Net force = 30 N - 10 N
Net force = 20 N

The acceleration of the block is given by Newton's second law of motion, which states that the net force acting on an object is equal to the product of its mass and acceleration. Mathematically, we can write this as:
Net force = mass x acceleration
20 N = 10 kg x acceleration
Therefore, acceleration = 2 m/s².

Hence, the correct answer is option B, 2 m/s².

A 10-Kg Block Is Pushed Across a Horizontal Surface with a Horizontal