First slide

Work

Question

A body moving with velocity v has momentum and kinetic energy numerically equal. What is the value of v

Easy

A

2m/s
B

$\sqrt{2} m / s$
C

1m/s
D

0.2m/s

Solution

$P = E \Rightarrow mv = \frac{1}{2} {mv}^{2} \Rightarrow v = 2 m / s$

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