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climate change is real

answer:

g'afternoon,thankyou sa points.

answer:

Explanation:

It will get converted into another form. Energy cannot be created or destroyed.

Both momentum and kinetic energy are quantities that can be attributed to a moving body, assuming that that body has a mass. Both can be transferred to another body but the main difference between the two is that once the object stops moving, the body losses its momentum but converts its kinetic energy into some other energy (such as sound, potential energy etc.)

The equation of momentum is:  

The equation of kinetic energy is:

As you can see, both equations make us of mass and velocity. However, kinetic energy "takes velocity a little more seriously" that is why there is a squared portion in the equation. Okay, so back to the problem:

Since the pitcher claims that he can throw a baseball with the same momentum as a moving bullet, then we can say , where p1 is the momentum of his baseball, and p2 is the momentum of the moving bullet.

substituting for the mass of the baseball, and the mass and velocity of the bullet, we have

note that: 0.145 kg ball = 145 g ball. having the same units on both sides of the equation is critical.

therefore the ball must be moving at 31.0 m/s to have the same momentum as the bullet. To put it in perspective, 31.0 m/s is equivalent to 111.6 kph. He must be a really good pitcher or his claim is too unrealistic.

Calculating the kinetic energy of both moving bodies:

note: 3.00 g = 0.003 kg. We need the units to be kg to have the Joules unit in our energy.

The two objects may have the same momentum but their kinetic energies are very much different. Since kinetic energy takes velocity more seriously, the object with greater velocity has the higher value of kinetic energy.

For more information regarding kinetic energy and momentum see these links: