Power is calculated as the product of force and velocity. Which option lists the correct components?

Power is calculated as the product of force and velocity. Which option lists the correct components?

• A. Mass and acceleration
• B. Force and velocity
• C. Force and distance
• D. Torque and time

Answer: (B)

Power is the rate at which work is done, and in linear motion that rate is the product of the force causing the motion and the velocity of the point of application. Therefore the relevant components are force and velocity. When you push harder (greater force) and move it faster (higher velocity), you increase power. The other pairings describe either the force itself (mass and acceleration via F = ma), or the total work done (force and distance) without accounting for how quickly the motion occurs, or mix torque with time in a way that doesn’t define power unless angular velocity is used. So force and velocity correctly identify the factors that determine power here.

Power is the rate at which work is done, and in linear motion that rate is the product of the force causing the motion and the velocity of the point of application. Therefore the relevant components are force and velocity. When you push harder (greater force) and move it faster (higher velocity), you increase power. The other pairings describe either the force itself (mass and acceleration via F = ma), or the total work done (force and distance) without accounting for how quickly the motion occurs, or mix torque with time in a way that doesn’t define power unless angular velocity is used. So force and velocity correctly identify the factors that determine power here.