Answer:
The kinetic energy of the baseball is 306.25 joules.
Explanation:
SInce the baseball can be considered a particle, that is, that effects from geometry can be neglected, the kinetic energy (
), in joules, is entirely translational, whose formula is:
(1)
Where:
- Mass, in kilograms.
- Speed, in meters per second.
If we know that
and
, then the kinetic energy of the baseball thrown by the player is:


The kinetic energy of the baseball is 306.25 joules.
<span>A warranty is an offer to repair or replace a product if there is a problem with the product. Warranties are written guarantee issued to the consumer by the manufacturer at the time of purchase, promising to repair or replace a faulty material. It is usually based on the premise that the product is free from defects in materials and workmanship. It claims that the manufacturer constructed the product out of proper materials, and would compensate the consumer should there be any defects. The period to file a claim typically varies. Some manufacturers place a 90 day period, some a year and a few, even more.</span>
(a)
The velocity of the meteorite just before hitting the ground is:

The loss of energy of the meteorite corresponds to the kinetic energy the meteorite had just before hitting the ground, so:

(b) 1 megaton of tnt is equal to

To find to how many megatons the meteorite energy loss

corresponds, we can set the following proportion

And so we find

So, 0.162 megatons.
(c) 1 Hiroshima bomb is equivalent to 13 kilotons (13 kT). The impact of the meteorite had an energy of

. So, to find to how many hiroshima bombs it corresponds, we can set the following proportion:

And so we find

So, the energy released by the impact of the meteorite corresponds to the energy of 12.46 hiroshima bombs.
To develop this problem it is necessary to use the concepts related to Impulse.
The impulse is defined as the change in velocity at the rate of mass, that is

Where,
m = Mass
Change in Velocity
This change in velocity can be expressed as,




Therefore the magnitude of the impulse is 4.32 Kg.m/s