Question

How do the mass and speed of an object affect the kinetic energy?
A. Mass has a greater effect than speed on kinetic energy.
B. Speed has a greater effect than mass on kinetic energy.
C. Mass and speed have the same effect on kinetic energy.
D. Mass has half the effect on kinetic energy that speed has.

Answer 1

heya..........

The formula for kinetic energy, KE=1/2*m*v^2 says that it is directly proportional to both the mass and the square of the speed. Note that even the special relativity version, KE=mc^2\left(\frac{1}{\sqrt{1-v^2/c^2}}-1\right), is still directly proportional to the mass and a function of the speed.

Why do we define things so this is the case? Mass is a measure of inertia, so the more massive something is, the more energy it should have. Experiments have shown that if we define potential energy the right way (for electric, elastic, and gravitational sources), the total energy is conserved..

so i think ur option is  c

tysm........@kundan

Answer 2

Hey !!!!!

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We Know That,

KE =1/2 mv^2

Where,

KE = Kinetic Energy
M = Mass
V = Speed/Velocity

From The Given Formula,

KE is 1/2 mass × Velocity ^2

1/2 M × V^2

Hence, We can Clearly Conclude That,

Mass & Speed Have No Greater Effect

Hence,

Correct Answer Is Option (c)

They Both have same Effect

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Hope This Helps....!!!!

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