4 years ago

PLEASE ANSWER AS QUICK AS POSSIBLE ANSWER WORTH 20 POINTS

Physics

1 answer:

Slav-nsk [51]4 years ago

5 0

Answer:

The density of balsa wood is about 170 kg/m^3.

Explanation:

happy to help :)

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3 years ago

A student made the claim that a 4 gram paintball fired from a paintball gun at 90 m/s could have about the same kinetic energy a

vovikov84 [41]

This question involves the concept of kinetic energy.

The student's claim is "right".

<h3>Kinetic Energy</h3>

The energy possessed by a body, by the virtue of its motion is called kinetic energy. Mathematically it is given by the following formula:

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

where,

K.E = Kinetic energy
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For the paintball:

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For the pellet:

$K.E = \frac{1}{2}(1\ g)(180\ m/s)^2$

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Hence, both paintball and pellet will have same kinetic energy. The student is right.

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