Register
A car has a mass of 2500 kg and accelerates from rest to a speed of 10,0 m/s in 5,0 s. The average power of the engine during this acceleration is...?
211k views
19 votes
A car has a mass of 2500 kg and accelerates from rest to a speed of 10,0 m/s in 5,0 s. The average

power of the engine during this acceleration is...?

User Jason Govig
by
3.4k points

1 Answer

7 votes

P = W/t

W = ΔPE = ΔKE


\tt P=(\Delta KE)/(t)\rightarrow v_1=0,KE_1=0\\\\P=(KE_2-KE_1)/(t)\\\\P=((1)/(2)* 2500* 10^2-0 )/(5)=2.5* 10^4~watt

User Geoffrey Bachelet
by
3.5k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.3m questions

4.2m answers

Other Questions

A charge Q is uniformly spread over one surface of a very large nonconducting square elastic sheet having sides of length d. At a point P that is 1.25 cm outside the sheet, the magnitude of the electric
If you use 750 Newtons of force to accelerate an object to 3.1 m/s​ . What is the object’s mass?
ou are unloading a refrigerator from a delivery van. The ramp on the van is 5.0 m long, and its top end is 1.4 m above the ground. As the refrigerator moves down the ramp, you are on the down side of the
A 0.260 kg potato is tied to a string with length 2.50 m, and the other end of the string is tied to a rigid support. The potato is held straight out horizontally from the point of support, with the string
What atom accounts for 91% of all the sun's atoms
Link Copied!