Ask Question
28 April, 14:41

A 1500-kg car accelerates from 0 to 25 m/s in 7.0 s with negligible friction and air resistance. what is the average power delivered by the engine? (1 hp = 746 w)

+2
Answers (1)
  1. 28 April, 16:40
    0
    Average power=89.8 hp

    Explanation:

    According to work energy theorem,

    Work done = change in kinetic energy

    W = 1/2 m Vf²-1/2 m Vi²

    m = mass = 1500 Kg

    Vi = initial velocity=0

    Vf = final velocity = 25 m/s

    w = 1/2 (15000 (25) ² - 1/2 (1500) (0) ²

    W=468750 J

    now power = work / time

    P=468750/7

    P=66964 W = 66964/746=89.8 hp

    so P=89.8 hp
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A 1500-kg car accelerates from 0 to 25 m/s in 7.0 s with negligible friction and air resistance. what is the average power delivered by the ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers