COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 3, Problem 70QAP
To determine
Javier Sotomayor's takeoff speed when he set a world record of 2.45 m in the men's outdoor high jump.
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Students have asked these similar questions
1) A kicker lines up to make a field goal attempt. If the ball leaves the kicker's foot at an initial
speed of 20 m/s and an angle to the horizontal of 30.0°,
Over what distances will the kick be successful (that it, over what range of distances will
the ball clear the crossbar?) Assume the kick is in a domed stadium with no wind, and the
ball is a point object.
a.
2) During a thunderstorm, a tornado lifts a car to a height of 125 meters above the ground. Increasing in strength, the tornado flings the car horizontally with an initial speed of 90.0 m/s.
a) How long does the car take to reach the ground?
b) How far horizontally does the car travel before hitting the ground?
Flying Circus of Physics
A skilled skier knows to jump upward before reaching a downward slope. Consider a jump in which the launch speed is vo = 15.0 m/s,
the launch angle is 80-9.1", the initial course is approximately flat, and the steeper track has a slope of 11.2'. Figure (a) shows a
prejump that allows the skier to land on the top portion of the steeper track. Figure (b) shows a jump at the edge of the steeper track. In
Figure (a), the skier lands at approximately the launch level. (a) In the landing, what is the angle between the skier's path and the
slope? In Figure (b), (b) how far below the launch level does the skier land and (c) what is ? (The greater fall and greater p can result in
loss of control in the landing.)
(a) Number ¡ 1.5
(b) Number
(c) Number
2.55
18.3
(a)
Units
Units
Units
(degrees)
(degrees)
(6)
Chapter 3 Solutions
COLLEGE PHYSICS
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