A 2 kg block is pulled along a frictionless horizontal surface by a constant horizontal force of 8 N. What is the acceleration of the block?
Show the answer and explanation
Correct answer
B. 4 m/s^2
Principle or equation
Newton's second law: F_net = m a.
Why this answer is correct
The net force is 8 N and mass is 2 kg, so a = F/m = 8/2 = 4 m/s^2.
Example
A 3 kg object acted on by a 6 N force accelerates at 2 m/s^2.
This published item includes a stored explanation and passed the platform’s publication workflow. It is independent preparation material, not a claim of an official or recalled examination question.