Question

If the mass of a player triples(3x), his kinetic energy will

a) not change
b) double (2x)
c) triple(3x)
d) quadruple(4x)

Answer 1

It would triple because it is adding 3 more times the number that you started with

Answer 2

c) triple(3x)

Step-by-step explanation:

The equation for kinetic energy is:

`k=(1)/(2)mv^2`

if the mass triples we will have that the new kinetic energy
`k'` is:

`k'=(1)/(2)(3m)v^2`

which can also be written as:

`k'=3((1)/(2)mv^2)`

and
`(1)/(2)mv^2` is the original kinetic energy
`k`, so:

`k'=3(k)`

⇒the new kinetic energy is three times the original kinetic energy.

the answer is: his kinetic energy will triple (3x) which is option c.