1.A 2.0-gram bullet is shot into a tree stump. It enters at a speed of 3.00 x 10

Question

1.A 2.0-gram bullet is shot into a tree stump. It enters at a speed of 3.00 x 104 cm/s and comes to rest after having penetrated 0.05 m in to the stump. What was the average force during the impact? Show all calculations leading to an answer.

2.Can you get younger by traveling at speeds near the speed of light? Explain using 3 or more complete sentences.

Physics. Please answer in the simplest way.

3.A beam of light and a baseball are both affected by gravity. Why is the path of the baseball very different than the path of the light beam? Use 3

Explanation / Answer

1. Since PE = W = F*d and PE=KE due to conservation of energy, then

F*d = 1/2 mv^2

F*.05m = (1/2)(.002kg)(300m/s) = .3m /.05m = 6N

2.No regardless of how fast you will be moving, time will continue to move forward for you. That is time will move very normal for you but for others(not moving that speed), time will seem slower.

3. First a baseball is affected by gravity more because it is far heavier than particles of light. Therefore the rate at which it falls will be higher than that of a particle given by the F equation which is F= ma where the mass of the particle is essentially non-existent. Second, all light travels at a speed of C and when looking at the kinematic equations, we see that the equations are very much time dependent therefore the amount of time it would be influenced by gravity would be so small compared to the amount that a baseball would be since a baseball will never reach the speed of light.

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