Acar travels at a constant velocity of 20.0 meters/second for 15 seconds. what is the power of the car if the initial force applied to it was 95 newtons?

The correct answer to the question is 1900 Joule.

CALCULATION:

As per the question, the velocity of the car v = 20.0 m/s.

The time taken by the car t = 15 seconds.

The initial force applied on the car F = 95 N.

We are asked to calculate the power of the car.

Let the displacement of the car is denoted as S.

Let the power of the car is P.

The power of a car is defined as the word done by the car per unit time.

Hence, the power P =

                                 =

                                 =

                                 =

                                 =

Here, is the angle between force and velocity.

If , then P = Fv.

Hence, the power of the car is calculated as -

                                          P = 95 N × 20.0 m/s

                                             = 1900 Joule.

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is