Physics, 28.01.2020 20:40 wannabe96

Consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. it falls to the ground. think about the amounts of potential and kinetic energy the bowling ball has:
• as sits on top of a building that is 40 meters tall.
• as it is half way through a fall off a building that is 40 meters tall and travelling 19.8 meters per second.
• as it is just about to hit the ground from a fall off a building that is 40 meters tall and traveling 28 meters per second.

1. does the bowling ball have more potential energy or kinetic energy as it sit on top of the building? why?
2. does the bowling ball have more potential energy or kinetic energy as it is half way through its fall? why?
3. does the bowling ball have more potential energy or kinetic energy just before it hits the ground? why?
4. what is the potential energy of the bowling ball as it sits on top of the building?
5. what is the potential energy of the ball as it is half way through the fall, 20 meters high?
6. what is the kinetic energy of the ball as it is half way through the fall?
7. what is the kinetic energy of the ball just before it hits the ground?

Answers: 3

Show answers

Another question on Physics

Physics, 21.06.2019 19:00

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

Answers: 1

Answer

Physics, 22.06.2019 01:50

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

Answers: 2

Answer

Physics, 22.06.2019 02:50

An alligator swims to the left with a constant velocity of 5 \,\dfrac{\text{m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction. when the alligator sees a bird straight ahead, the alligator speeds up with a constant acceleration of 3 \,\dfrac{\text {m}}{\text s^2}3 s 2 m ? 3, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction leftward until it reaches a final velocity of 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction leftward. how many seconds does it take the alligator to speed up from 5 \,\dfrac{\text {m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction to 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction?

Answers: 3

Answer

Physics, 22.06.2019 11:50

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

Answers: 2

Answer

You know the right answer?

Consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. it falls to the groun...

Questions