2. A student sits atop a platform a distance h above the ground. He throws a large firecracker horizontally with a speed v However, a wind blowing parallel to the ground gives the firecracker a constant horizontal acceleration with magnitude a. This results in the firecracker reaching the ground directly under the student. Determine the height h in terms of a, v and g. You can ignore the effect of air resistance on the vertical motion.

2. A student sits atop a platform a distance h above the ground. He throws a large firecracker horizontally with a speed v However, a wind blowing parallel to the ground gives the firecracker a constant horizontal acceleration with magnitude a. This results in the firecracker reaching the ground directly under the student. Determine the height h in terms of a, v and g. You can ignore the effect of air resistance on the vertical motion.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter3: Vectors And Two-Dimensional Motion

Section: Chapter Questions

Problem 7WUE: A skier leaves the end of a horizontal ski jump at 22.0 m/s and falls through a vertical distance of...

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A skier leaves the end of a horizontal ski jump at 22.0 m/s and falls through a vertical distance of 3.20 m before landing. Neglecting air resistance, (a) how long does it take the skier to reach the ground? (b) How far horizontally docs the skier travel in the air before landing? (Sec Section 3.4.)
(a) A daredevil is attempting to jump his motorcycle over a line of buses parked end to end by driving up a 32° ramp at a speed of 40.0 m/s (144 km/h). How many buses can he clear if the top of the takeoff ramp is at the same height as the bus tops and the buses are 20.0 m long? (b) Discuss what your answer implies about the margin of error in this act—that is, consider how much greater the range is than the horizontal distance he must travel to miss the end of the last bus. (Neglect air resistance.)
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1. A diver running 265 cm/s dives out horizontally from the edge of a vertical cliff and 3.0 s later reaches the water below. How high was the cliff and how far from its base did the diver hit the water? Express your answer in meters. 2. A grasshopper hops along a level road. On each hop, the grasshopper launches itself at angle 45° and achieves a range R = 95 cm. What is the average horizontal speed (in m/s) of the grasshopper as it hops along the road?
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A clever inventor has created a device that can launch water balloons with an initial speed of 85.0 m>s. Her goal is to pass a balloon through a small hoop mounted on the observation platformat the top of the Eiffel Tower, 276 m above the ground. If the balloon is to pass through the hoop at the peak of its flight, at whatangle above horizontal should she launch the balloon?
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