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 39 times)

MirandaLo · **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