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

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

User Neverlord
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2 Answers

5 votes
It would triple because it is adding 3 more times the number that you started with
User SyncMaster
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4 votes

Answer:

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.

User Wine Too
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