A 475-gram ball is traveling horizontally at 12.0 m/s to the left ...

[NguyenJ]

A 475-gram ball is traveling horizontally at 12.0 m/s to the left when it is suddenly struck horizontally by a bat, causing it to reverse direction and initially travel at 8.50 m/s to the right.
 
  If the bat produced an average force of 1275 N on the ball, for how long (in milliseconds) was it in contact with the ball?

Question 2

A 120-V rms voltage at 60 Hz is applied across an RC circuit. The rms value of the current in the circuit is 0.60 A, and it leads the voltage by 60. What is the resistance in this circuit?
 
  A) 100  B) 60  C) 150  D) 200  E) 120

[ciecieme]

Answer to Question 1

7.64 ms

Answer to Question 2

A

[NguyenJ]

Thank you!

[ciecieme]

Always glad to help...