If the mass of a ball b is 1 kilogram and it’s speed is 1 m/sec. the mass and the speed of ball a is three times the mass and speed of ball b. what is the ratio of kinetic energy of ball a to ball b? hint: dividethe kinetic energy equation for ball a by the kinetic energy equation of ball b.
a.3
b.6
c.9
d.27

The ratio of kinetic energy of ball A to ball B is 27

Option D

Explanation:

The kinetic energy of any object is the energy exhibited by the object when it is in motion. The kinetic energy of any object is directly proportional to the mass of the object and square of the speed at which the object is moving. So the kinetic energy of any object can be represented as

In this case, for ball B the mass is 1 kg and speed is 1 m/s. So the kinetic energy of ball B is

As it is said that the mass (M) and speed of ball A is three times the mass and speed of ball B.  So ,

And,

Thus, the kinetic energy of ball A will be

Now, to determine the ratio of kinetic energy of ball A to ball B,

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explanation:

gravititional force is a force that is acting around you, it is non-contactable and it is a force that pulls you to the core of the earth.

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