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Author Question: A 51 g steel ball is released from rest and falls vertically onto a steel plate. The ball strikes ... (Read 206 times)

NguyenJ

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on: Jul 29, 2018
A 51 g steel ball is released from rest and falls vertically onto a steel plate. The ball strikes the plate and is in contact with it for 0.5 ms. The ball rebounds elastically, and returns to its original height.
 
  The time interval for a round trip is 3.00 s. In this situation, the average force exerted on the ball during contact with the plate is closest to: A) 3,000 N
  B) 1,500 N
  C) 2,490 N
  D) 2,000 N
  E) 3,500 N

Question 2

A 600-kg car is going around a banked curve with a radius of 110 m at a speed of 24.5 m/s. What is the appropriate banking angle so that the car stays on its path without the assistance of friction?
 
  A) 60.9 B) 29.1 C) 33.8 D) 56.2 E) 13.5


ghepp

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

B


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NguyenJ

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Reply #2 on: Jul 29, 2018
TY


ghepp

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Reply #3 on: Jul 29, 2018
You're welcome


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