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A white go-kart moving 5 m/s hits a red go-kart that is at rest. Both go-karts weigh 2 kilograms and the
white go-kart travels in the opposite direction at 2 m/s after the collision. What is the velocity of the red
go-kart after the collision?
A 10 m/s
7 m/s
5 m/s
o 2 m/s

Respuesta :

Answer:

The velocity of the red  go-kart after the collision is 3 m/s

Explanation:

Here the principle of conservation of momentum will be used.

Momentum of the system before collision = Momentum of the system after collision

Momentum of the system before collision [tex]= 2*5 + 2*0[/tex]

Momentum of the system after collision [tex]= 2 * 2 + 2 *x[/tex]

[tex]2*5 + 2*0[/tex] [tex]= 2 * 2 + 2 *x[/tex]

[tex]10-4 = 2 x\\6 = 2x\\x = 3[/tex]m/s

The velocity of the red  go-kart after the collision is 3 m/s

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