Question

A paper clip that has a mass of 1.5 grams is thrown into the air and initially has a kinetic energy of 0.013 J.

Calculate the velocity of the paper clip when it is thrown (rounding your answer to the nearest tenth).

Velocity ___________ m/s

Answer 1

v = 4.2
`(m)/(s)`

set up an equation

we can use the formula for kinetic energy since we know mass and kinetic energy

K =
`(mv^(2))/(2)`

v =
`\sqrt{(2K)/(m) }`

values

K = 0.013 J

m = 1.5g = 0.0015 kg

plug in values

v =
`\sqrt{(2*0.013)/(0.0015) }`

v = 4.2
`(m)/(s)`