Physics

Physics

Problem

A 2 kg toy car initially at rest is pushed by a constant horizontal force of 6 N for 4 s. Calculate the speed the car attains.
Intuitive explanation

This is a kinematics problem built on Newton's second law: a constant force produces constant acceleration. Start by finding the acceleration using F=maF = ma, then use that acceleration with the time interval to find the final velocity. Since the car begins at rest, you won't need to worry about an initial velocity term—just watch how velocity builds linearly under steady force.

Intuitive explanation

This is a kinematics problem built on Newton's second law: a constant force produces constant acceleration. Start by finding the acceleration using F=maF = ma, then use that acceleration with the time interval to find the final velocity. Since the car begins at rest, you won't need to worry about an initial velocity term—just watch how velocity builds linearly under steady force.

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