finlayalfieps4 finlayalfieps4
  • 22-10-2019
  • Physics
contestada

A car with a mass of 1400kg is being driven along the motorway at 30m/s. Calculate the kinetic energy of the car

Respuesta :

skyluke89
skyluke89 skyluke89
  • 03-11-2019

Answer:

[tex]6.3 \cdot 10^5 J[/tex]

Explanation:

The kinetic energy of an object is given by

[tex]K=\frac{1}{2}mv^2[/tex]

where

m is the mass of the object

v is its speed

For the car in this problem,

m = 1400 kg

v = 30 m/s

Therefore, the kinetic energy of the car is

[tex]K=\frac{1}{2}(1400)(30)^2=6.3 \cdot 10^5 J[/tex]

Answer Link
kizzyola
kizzyola kizzyola
  • 18-07-2021

Answer:

The correct answer is 630000j

Answer Link

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