Author Question: A pole vaulter clears 3.98 m. With what speed does he strike the mat in the landing area? a. 78.0 ... (Read 102 times)

panfilo

  • Hero Member
  • *****
  • Posts: 572
A pole vaulter clears 3.98 m. With what speed does he strike the mat in the landing area?
 a. 78.0 m/s
  b. 6.25 m/s
  c. 8.83 m/s
  d. 4.42 m/s
  e. 0.226 m/s

Question 2

An airliner with mass 90 000 kg is flying at 900 km/h at a height of 15.0 km. What is its total energy (kinetic + potential) if the total was 0 when the airliner was at rest on the ground?
 a. 5.0E+10 J
  b. 3.6E+10 J
  c. 1.3E+10 J
  d. zero
  e. 1.6E+10 J



ong527

  • Sr. Member
  • ****
  • Posts: 285
Answer to Question 1

c

Answer to Question 2

e



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

For a complete list of videos, visit our video library