A lorry of mass 4000 kg is travelling at a speed of 4 m/s. A car has a mass of 1000 kg. The car’s kinetic energy is equal to that of t

Question

A lorry of mass 4000 kg is travelling at a speed of 4 m/s.
A car has a mass of 1000 kg. The car’s kinetic energy is equal to that of the lorry

in progress 0
Thái Dương 3 years 2021-07-28T06:16:08+00:00 1 Answers 5 views 0

Answers ( )

  1. Tryphena
    0
    2021-07-28T06:17:29+00:00
    Reply

    Answer:

    KE = 32,000J

    v = 8m/s

    Explanation:

    KE = .5*m*v²

    KE = .5*4000kg*(4m/s)²

    KE = 32,000J

    32,000J = .5*1000kg*v²

    v² = 64

    v = 8m/s

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )