A golf ball hits a wall and bounces back at 3/4 the original ...

[Charlie]

A golf ball hits a wall and bounces back at 3/4 the original speed. What part of the original kinetic energy of the ball did it lose in the collision?
 a. 1/4
  c. 7/16
  b. 3/8
  d. 9/16

Question 2

In an isovolumetric process where the pressure increases, are the heat absorbed, work done by the system, and the change in internal energy of the system positive, negative, or zero?
 a. Q is +, W is +, and DU is +.
  c. Q is +, W is 0, and DU is +.
  b. Q is +, W is , and DU is 0.
  d. Q is , W is 0, and DU is .

[ong527]

Answer to Question 1

C

Answer to Question 2

C

[Charlie]

Thanks for the timely response, appreciate it

[pangili4]

Excellent