# read the scenario, then answer the questions. a 2 kg ball is thrown upward with a velocity of 15 m/s. what is the kinetic energy of the ball as it is being thrown? j what is the potential energy of the ball when it gets to its maximum height just before falling back to the ground? j

### James

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get read the scenario, then answer the questions. a 2 kg ball is thrown upward with a velocity of 15 m/s. what is the kinetic energy of the ball as it is being thrown? j what is the potential energy of the ball when it gets to its maximum height just before falling back to the ground? j from EN Bilgi.

## A 2 kg ball is thrown upward with a velocity of 15 m/s. What is the kinetic energy of the ball as it is being thrown? J What is the potential energy of the ball when it gets to its maximum height just before falling back to the ground? J?

Answer (1 of 2): Question: What is the kinetic energy of the ball as it is being thrown? Answer: E_K=\frac {1}{2}mv^2 E_K=\frac {1}{2}(2)(15)^2 E_K=225\ J Question: What is the potential energy of the ball when it gets to its maximum height just before falling back to the ground? Answer wi...

A 2 kg ball is thrown upward with a velocity of 15 m/s. What is the kinetic energy of the ball as it is being thrown? J What is the potential energy of the ball when it gets to its maximum height just before falling back to the ground? J?**Answered 1 year ago**· Author has 6.9K answers and 5.6M answer views

**Answered 1 year ago**

Answer:EK=12mv2${E}_{K}=\frac{1}{2}m{v}^{2}$

EK=12(2)(15)2${E}_{K}=\frac{1}{2}\left(2\right)(15{)}^{2}$ EK=225J${E}_{K}=225J$ Question:What is the potential energy of the ball when it gets to its maximum height just before falling back to the ground?Answer without any calculation:Assuming that the ball has not gained or lost energy from or to any other sources, the potential energy at the highest point should be equal to the initial kinetic energy. Hence, the answer is 225 J

Answer with the calculations:First, find the maximum height:Hint: the velocity at the maximum point will be

Question:What is the kinetic energy of the ball as it is being thrown?Answer:EK=12mv2${E}_{K}=\frac{1}{2}m{v}^{2}$

EK=12(2)(15)2${E}_{K}=\frac{1}{2}\left(2\right)(15{)}^{2}$ EK=225J${E}_{K}=225J$ Question:What is the potential energy of the ball when it gets to its maximum height just before falling back to the ground?Answer without any calculation:Assuming that the ball has not gained or lost energy from or to any other sources, the potential energy at the highest point should be equal to the initial kinetic energy. Hence, the answer is 225 J

Answer with the calculations:First, find the maximum height:Hint: the velocity at the maximum point will be zero.2gs=v2−u2$2gs={v}^{2}-{u}^{2}$

2(−9.807)s=(0)2−(15)2$2(-9.807)s=(0{)}^{2}-(15{)}^{2}$ s=−225−19.614$s=\frac{-225}{-19.614}$ s=11.47m$s=11.47m$Use the formula for potential energy:EP=mgh${E}_{P}=mgh$

EP=(2)(9.807)(11.47)${E}_{P}=\left(2\right)\left(9.807\right)\left(11.47\right)$ EP=224.97J${E}_{P}=224.97J$ The reason we get just a little bit of difference in calculation version and without calculation version is because of rounding off of values. In case you don’t understand the formulas used, either ask in comment or ask another question specifically for that purpose.**Updated Nov 19, 2021**

**Answered Jan 17, 2022**· Upvoted by Gene Ewald, M.S. Physics, University of Minnesota - Twin Cities (1971) · Author has 687 answers and 125.4K answer views

Lets say at height h meters, we have PE = KE

mgh = ½m𝑣²h =v²2g

If initial velocity is 𝑢 m/s, then at height h, the velocity 𝑣 will be given by

𝑣² = 𝑢² - 2gh …..(2) Plug (2) in (1)h =u²−2gh2g

h = u²4g

h = (50)²4∗9.8

**Answered Nov 14, 2021**

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## Read the scenario, then answer the questions. A 2 kg ball is thrown upward with a velocity

Read the scenario, then answer the questions. A 2 kg ball is thrown upward with a velocity of 15 m/s. What is the kinetic energy of the ball as it is being thrown? ____J What is the potential energy of the ball when it gets to its maximum height just before falling back to the ground? ____J

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Read the scenario, then answer the questions. A 2 kg ball is thrown upward with a velocity of 15 m/s. What is the kinetic energy of the ball as it is being thrown? ____J What is the potential energy of the ball when it gets to its maximum height just before falling back to the ground? ____J

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