A 20-N horizontal force pushes an object along a rough floor so that the object moves with a constant velocity of 7.0 m/s. How much power does this force deliver to the object?
power = force x velociy.
Plug the values in and you have your answer.
To find the power delivered by a force, you need to multiply the force by the velocity of the object. Power is given by the equation:
Power = Force * Velocity
In this case, the force is 20 N and the velocity is 7.0 m/s.
To calculate the power, simply plug the values into the equation:
Power = 20 N * 7.0 m/s
Power = 140 N·m/s or 140 watts (since the unit of power is Watts).
To find out the power delivered by the force, we can use the formula:
Power = Force × Velocity
Given:
Force = 20 N
Velocity = 7.0 m/s
Substituting these values into the formula, we get:
Power = 20 N × 7.0 m/s
Calculating the product, we find:
Power = 140 N·m/s
Therefore, the power delivered by the 20-N horizontal force is 140 N·m/s.