Can you please answer number 3 and show all of the steps to the solution ReferencesMailingsReviewEnable Editingatain viruses. Unless you need to edit, it's safer to stay in Protected View.Give the physical unit for each physical quantity calculated.1. a) What is the Potential Energy of a 50kg mass at the edgeof a roof 110 m above the ground? Take the gravitationalPE at the ground level to be zero.b) How much work is done by gravity if it falls a distanceof 50m above the ground level. Use g = 10 m/s^22. A car of mass 1200 kg initially moving at a speed of 8m/ssuddenly changes its speed to 15m/s in 12 seconds.a) What is the work done?b) How long did it take for the average Power output tobe P 6,360 W3. A ball is initially at a height of H above the ground. Itrolls down a frictionless slope with an initial speed of 12m/s.The final speed of the ball when it is 3m above the ground is20m/s. Calculate the initial height of the ball when released.4. Marlene, a 45.4kg girl is running at 3.5m/s on a pierfrom the shore towards a lake. At the edge of the piershe jumps onto a raft in the water. The raft wasoriginally drifting towards the pier with a drift speed ofv= -1m/s. What is the speed of Marlene and the raft ifected ViewD FocusW

Answered: Image /qna-images/answer/c8e20e93-7107-41d5-b994-c71199da9f34.jpg

3. A ball is initially at a height of H above the ground. It rolls down a frictionless slope with an initial speed of 12m/s. The final speed of the ball when it is 3m above the ground is 20m/s. Calculate the initial height of the ball when released.

3. A ball is initially at a height of H above the ground. It rolls down a frictionless slope with an initial speed of 12m/s. The final speed of the ball when it is 3m above the ground is 20m/s. Calculate the initial height of the ball when released.

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter6: Waves And Sound

Section: Chapter Questions

Problem 28Q

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Can you please answer number 3 and show all of the steps to the solution

References
Mailings
Review
Enable Editing
atain viruses. Unless you need to edit, it's safer to stay in Protected View.
Give the physical unit for each physical quantity calculated.
1. a) What is the Potential Energy of a 50kg mass at the edge
of a roof 110 m above the ground? Take the gravitational
PE at the ground level to be zero.
b) How much work is done by gravity if it falls a distance
of 50m above the ground level. Use g = 10 m/s^2
2. A car of mass 1200 kg initially moving at a speed of 8m/s
suddenly changes its speed to 15m/s in 12 seconds.
a) What is the work done?
b) How long did it take for the average Power output to
be P 6,360 W
3. A ball is initially at a height of H above the ground. It
rolls down a frictionless slope with an initial speed of 12m/s.
The final speed of the ball when it is 3m above the ground is
20m/s. Calculate the initial height of the ball when released.
4. Marlene, a 45.4kg girl is running at 3.5m/s on a pier
from the shore towards a lake. At the edge of the pier
she jumps onto a raft in the water. The raft was
originally drifting towards the pier with a drift speed of
v= -1m/s. What is the speed of Marlene and the raft if
ected View
D Focus
W

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