Question

Describe the types of energy and the percentage of each type of energy present when a book is falling from a shelf. Include four points in time in your answer:

1) The book is at rest on the shelf.

2) The book is falling and is half way between the shelf the and ground.

3) The book is falling and just about to hit the ground.

4) The book is at rest on the ground. Please take the ground as the zero potential energy position. Ignore air resistance.

Answer #1

1. Physics and astronomy student club has a recently established
tradition of pumpkin drop, from the top of Wick Science Building to
the "moat" below street level. Although the "experimental data"
have not been made public, there have been rumors of the drop took
2.07 seconds, i.e. falling from rest with negligible air drag.
Based on the rumor, how tall is the building from the "moat" to the
roof?
Ignore air drag or any rotation of pumpkins.
Hint: You may...

b) A rocket shot up reaches a height of 105.0m where an
explosion causes the rocket to split into two parts that weigh
2.1kg and 0.42kg respectively. 970J of chemical energy was
transformed into kinetic energy of the two parts. (i) Describe the
conservation of momentum and energy and include an equation that
represents this example. (ii) What is the speed of each part just
after the explosion? (iii) It is observed that the two parts hit
the ground at...

1.
A careless painter dropped a brush (with paint!) from a scaffold
outside a building he's supposed to paint. You were just recording
a selfie video across the street and caught the falling brush in
your video. You used your physics skills to figure out the paint
brush was falling at 4.0 m/s when it was just passing the top of a
window that you estimated at 7.0 m above the ground. How long did
it take the brush to...

a) SCSU physics and astronomy student club has a recently
established tradition of pumpkin drop, from the top of Wick Science
Building to the "moat" below street level. Although the
"experimental data" has not been made public, there have been
rumors of the drop took 2.12 seconds, i.e. falling from rest with
negligible air drag. Based on the rumor, how tall is the building
from the "moat" to the roof? Ignore air drag or any rotation of
pumpkins. Hint: You...

A meteoroid of mass = 565 kg has a speed of 91.0 m/s when 900 km
above the Earth. It is falling vertically (ignore air resistance)
and strikes a bed of sand in which it is brought to rest in 3.25 m.
(a) How much work does the force of gravity do on the meteoroid on
the way to the surface? Incorrect: Your answer is incorrect. GJ (b)
What is the speed of the meteoroid just before striking the sand?...

just do questions 5 through 10
3.13.6
Question 110 pts
A 319 kg motorcycle is parked in a parking garage. If the car has
35,494 J of potential energy, how many meters above ground is the
car? Report your answer to 1 decimal place. Please do not include
units or the answer will be marked incorrect.
Flag this Question
Question 210 pts
A box sitting on the top of a hill has 252 J of potential energy.
If the hill...

8 through 10 done please!!
3.13.6
Question 110 pts
A 319 kg motorcycle is parked in a parking garage. If the car has
35,494 J of potential energy, how many meters above ground is the
car? Report your answer to 1 decimal place. Please do not include
units or the answer will be marked incorrect.
Flag this Question
Question 210 pts
A box sitting on the top of a hill has 252 J of potential energy.
If the hill is...

answer all questions
3.13.6
Question 110 pts
A 319 kg motorcycle is parked in a parking garage. If the car has
35,494 J of potential energy, how many meters above ground is the
car? Report your answer to 1 decimal place. Please do not include
units or the answer will be marked incorrect.
Flag this Question
Question 210 pts
A box sitting on the top of a hill has 252 J of potential energy.
If the hill is 279 meters...

Finding the Spring Constant
We can describe an oscillating mass in terms of its position,
velocity, and acceleration as a function of time. We can also
describe the system from an energy perspective. In this experiment,
you will measure the position and velocity as a function of time
for an oscillating mass and spring system, and from those data,
plot the kinetic and potential energies of the system.
Energy is present in three forms for the mass and spring system....

ch 6
1:
It is generally a good idea to gain an understanding of the
"size" of units. Consider the objects and calculate the kinetic
energy of each one.
A ladybug weighing 37.3 mg
flies by your head at 3.83 km/h
.
×10
J
A 7.15 kg
bowling ball slides (not rolls) down an alley at 17.5 km/h
.
J
A car weighing 1260 kg
moves at a speed of 49.5 km/h.
5:
The graph shows the ?-directed force
??...

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