This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A ball is projected into the air with 900 J of kinetic energy that is transformed to potential ... (Read 31 times)

Sufayan.ah

  • Hero Member
  • *****
  • Posts: 512
on: Jul 29, 2018
A ball is projected into the air with 900 J of kinetic energy that is transformed to potential energy at the top of its trajectory. When it returns to its original level after encountering air resistance, its kinetic energy is
 
  A) less than 900 J.
  B) more than 900 J.
  C) 900 J.
  D) not enough information

Question 2

A car moves 4 times as fast as another identical car. Compared with the slower car, the faster car has
 
  A) 4 times the kinetic energy.
  B) 8 times the kinetic energy.
  C) 12 times the kinetic energy.
  D) 16 times the kinetic energy.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

popopong

  • Sr. Member
  • ****
  • Posts: 307
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: D


Sufayan.ah

  • Hero Member
  • *****
  • Posts: 512
Reply #2 on: Jul 29, 2018
Thank you!


popopong

  • Sr. Member
  • ****
  • Posts: 307
Reply #3 on: Jul 29, 2018
Always glad to help...


« previous next »
 

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Conduction of the action potential along an axon. Conduction of the action potential along an axon.
The energy set-point view that is the basis of many people’s thinking about hunger and eating. The energy set-point view that is the basis of many people’s thinking about hunger and eating.
Energy radiated by substances occurs over a wide range of wavelengths. Energy radiated by substances occurs over a wide range of wavelengths.
The gap between the projected level of greenhouse gas emissions The gap between the projected level of greenhouse gas emissions
Estimating Potential Blood Volume Loss (Part 1) Estimating Potential Blood Volume Loss (Part 1)
Energy flow in the light-dependent reactions of photosynthesis Energy flow in the light-dependent reactions of photosynthesis
Video: Muscle Fatigue and Recovery

For a complete list of videos, visit our video library