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Author Question: A bridge that was 8.3 m long has been washed out by the rain several days ago. How fast must a car ... (Read 40 times)

MirandaLo

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on: Jul 28, 2018
A bridge that was 8.3 m long has been washed out by the rain several days ago. How fast must a car be going to successfully jump the stream? Although the road is level on both sides of the bridge, the road on the far side is 2.0 m lower than the road on this side.
 a. 5.0 m/s
  c. 13 m/s
  b. 7.8 m/s
  d. 25 m/s

Question 2

A stone is thrown with an initial speed of 15 m/s at an angle of 53 above the horizontal from the top of a 40-m building. If g = 9.8 m/s2 and air resistance is negligible, what is the magnitude of the horizontal displacement of the rock?
 a. 30 m
  c. 66 m
  b. 39 m
  d. 90 m


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Sammyo

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


MirandaLo

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

softEldritch

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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