High School

We appreciate your visit to A motorbike engine can develop a power of 90000 W in order to keep a constant velocity of 30 m s What is the pushing. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!

A motorbike engine can develop a power of 90000 W in order to keep a constant velocity of 30 m/s. What is the pushing force?

(A) 3000 N
(B) 30000 N
(C) 300 N
(D) 30 N

A car travels with a constant speed of 15 m/s. The car's engine produces a 4000 N pushing force in order to keep the speed constant. How much power is developed by the engine?

(A) 60000 W
(B) 60 W

Answer :

To find the pushing force for the motorbike, we can use the formula relating power, force, and velocity. Power [tex]P[/tex] is given by the equation:

[tex]P = F \times v[/tex]

Where:
[tex]P[/tex] = Power (in watts)
[tex]F[/tex] = Force (in newtons)
[tex]v[/tex] = Velocity (in meters per second)

We're given that the power [tex]P = 90000 \text{ W}[/tex] and the velocity [tex]v = 30 \text{ m/s}[/tex]. We need to solve for the force [tex]F[/tex]:

[tex]F = \frac{P}{v} = \frac{90000}{30} = 3000 \text{ N}[/tex]

Thus, the pushing force is [tex]3000 \text{ N}[/tex]. Therefore, the correct answer is (A) 3000 N.

For the car, we need to find how much power is developed by the engine using the same formula:

[tex]P = F \times v[/tex]

Where:
[tex]F = 4000 \text{ N}[/tex] (force)
[tex]v = 15 \text{ m/s}[/tex] (velocity)

So, the power [tex]P[/tex] is:

[tex]P = 4000 \times 15 = 60000 \text{ W}[/tex]

Therefore, the power developed by the engine is [tex]60000 \text{ W}[/tex]. The correct choice is (A) 60000 W.

Thanks for taking the time to read A motorbike engine can develop a power of 90000 W in order to keep a constant velocity of 30 m s What is the pushing. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada