Author Question: The speed of a 2.0-kg object changes from 30 m/s to 40 m/s during a 5.0-s time interval. During this ... (Read 123 times)

Sportsfan2111

  • Hero Member
  • *****
  • Posts: 585
The speed of a 2.0-kg object changes from 30 m/s to 40 m/s during a 5.0-s time interval. During this same time interval, the velocity of the object changes its direction by 90. What is the magnitude of the average total force acting on the object during this time interval?
 a. 30 N
  b. 20 N
  c. 40 N
  d. 50 N
  e. 6.0 N

Question 2

A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30 below the horizontal just before it strikes a horizontal surface. The ball leaves this surface 0.50 s later with a velocity of 2.0 m/s directed 60 above the horizontal. What is the magnitude of the average resultant force on the ball?
 a. 14 N
  b. 11 N
  c. 18 N
  d. 22 N
  e. 3.0 N



mcomstock09

  • Sr. Member
  • ****
  • Posts: 377
Answer to Question 1

B

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

For a complete list of videos, visit our video library