Question

A vehicle needs an engine of 7500W to keep on moving with constant velocity of 20m/s on a horizontal surface. The force required for the motion is

Answer 1

Answer:

F= P.V= 7500×20=150000N

Answer 2

The force required for the motion is 375 N.

Explanation:

It is given that,

Power of the engine, P = 7500 W

Velocity of vehicle, v = 20 m/s

The work done divided by time is equal to the power of an object. It is given by :

$P=\dfrac{W}{t}$

or

$P=F\times v$

F is the force required

$F=\dfrac{P}{v}$

$F=\dfrac{7500\ W}{20\ m/s}$

F = 375 N

So, the force required for the motion is 375 N. Hence, this is the required solution.

Learn more,

Power

https://brainly.in/question/1854655