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3 Conservation of energy

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Question 22

Runner X moves at 6.0 m s^-1 and runner Y moves at 3.0 m s^-1. The ratio of the kinetic energy of X to the kinetic energy of Y is $6 : 1$ . What is the ratio of the mass of X to the mass of Y?

[1]

A

$3 : 1$

B

$2 : 3$

C

$3 : 2$

D

$6 : 1$

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3 Conservation of energy Questions

GCSE
Physics
3 Conservation of energy

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