Author Question: A ball is thrown at an original speed of 8.0 m/s at an angle of 35 above the horizontal. If there is ... (Read 122 times)

mspears3

  • Hero Member
  • *****
  • Posts: 586
A ball is thrown at an original speed of 8.0 m/s at an angle of 35 above the horizontal. If there is no air resistance, what is the speed of the ball when it returns to the same horizontal level?
 
  A) 4.0 m/s
  B) 8.0 m/s
  C) 16 m/s
  D) 9.8 m/s

Question 2

Which of following statements about the image formed by a single concave lens are true? (There could be more than one correct choice.)
 
  A) The image is always real.
  B) The image is always virtual.
  C) The image is always inverted.
  D) The image is always upright.
  E) The image is always smaller than the object.


alvinum

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

B

Answer to Question 2

B, D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

For a complete list of videos, visit our video library