Question

A 6.5 x 104 W engine exerts a constant force on of 5.5 x 103 N on a car, the resulting velocity is?

a. 0.085 m/s b. 12 m/s c. 0.0 m/s d. 3.6 x 108 m/s

Answer 1

12m/s

Step-by-step explanation:

Given parameters:

Power = 6.5 x 10⁴W

Force = 5.5 x 10³N

Unknown:

The resulting velocity = ?

Solution:

The velocity of a body is related to force and power using the expression below;

Power = Force x velocity

Insert the parameters and solve for velocity

6.5 x 10⁴ = 5.5 x 10³ x velocity

velocity =
`(6.5 x 10^(4) )/(5.5 x 10^(3) )` = 12m/s