uhansiddique30 uhansiddique30

02-06-2021
Physics

contestada

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

Respuesta :

machmillerg machmillerg

02-06-2021

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

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