Author Question: An airplane starts from rest and accelerates at a constant 10.8 m/s2. What is its speed at the end ... (Read 142 times)

mwit1967

  • Hero Member
  • *****
  • Posts: 501
An airplane starts from rest and accelerates at a constant 10.8 m/s2. What is its speed at the end of a 400 m-long runway?
 
  A) 4320 m/s B) 93.0 m/s C) 37.0 m/s D) 186 m/s E) 65.7 m/s

Question 2

Block 1 and block 2 have the same mass, m, and are released from the top of two inclined planes of the same height making 30 and 60 angles with the horizontal direction, respectively.
 
  If the coefficient of friction is the same in both cases, which of the blocks is going faster when it reaches the bottom of its respective incline? A) We must know the actual masses of the blocks to answer.
  B) Both blocks have the same speed at the bottom.
  C) Block 1 is faster.
  D) Block 2 is faster.
  E) There is not enough information to answer the question because we do not know the value of the coefficient of kinetic friction.


amandanbreshears

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

B

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

For a complete list of videos, visit our video library