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)

Answer 1

Answer:

$v = 4.2 \ m/s$

Explanation:

Given data:

Mass of the paper clip, $m = 1.5 \ g = 0.0015 \ kg$

Kinetic energy, $K = 0.013 \ \rm J$

Let the velocity of the paper clip when it is thrown be v.

Thus,

$K = \frac{1}{2}mv^{2}$

$0.013 = 0.5 \times 0.0015 \times v^{2}$

$\Rightarrow \ v = 4.16 \ m/s$

$v = 4.2 \ m/s.$  (rounding to nearest tenth)