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

Author Question: A ball is projected 125 meters straight upward and then falls the same distance back to its starting ... (Read 87 times)

craiczarry

  • Hero Member
  • *****
  • Posts: 527
on: Jul 29, 2018
A ball is projected 125 meters straight upward and then falls the same distance back to its starting point. Neglecting air resistance, its total time in the air is about
 
  A) 5 s.
  B) 10 s.
  C) 15 s.
  D) more than 20 s.

Question 2

Neglecting air resistance, a ball projected straight upward so it remains in the air for 10 seconds needs an initial speed of
 
  A) 50 m/s.
  B) 60 m/s.
  C) 80 m/s.
  D) 100 m/s.
  E) 110 m/s.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Brummell1998

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: A


craiczarry

  • Member
  • Posts: 527
Reply 2 on: Jul 29, 2018
Excellent

mohan

  • Member
  • Posts: 362
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

back of neck diagram back of neck diagram
"To begin the pull-back exercise, grasp wrists, then lean back and balance." "To begin the pull-back exercise, grasp wrists, then lean back and balance."
Redrape the back, face the head of the table, and apply passive touch as finishing technique. Gently ... Redrape the back, face the head of the table, and apply passive touch as finishing technique. Gently ...
Good body mechanics when facing the head or foot of the table. A. Head and back in alignment. B. ... Good body mechanics when facing the head or foot of the table. A. Head and back in alignment. B. ...
Semireclining position. Back supported and placement of bolster under the knees. Semireclining position. Back supported and placement of bolster under the knees.
Video: Neuron structure and function - sensory neurons, association neurons & motor neurons

For a complete list of videos, visit our video library