6. A long-jumper leaves the ground at an angle of 20.0° above the horizontal and at a speed of 11.0 m/s. (a) How far does he jump in the horizontal direction? (Assume his motion is equivalent to that of a particle.)
6. A long-jumper leaves the ground at an angle of 20.0° above the horizontal and at a speed of 11.0 m/s. (a) How far does he jump in the horizontal direction? (Assume his motion is equivalent to that of a particle.)
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:6. A long-jumper leaves the ground at an angle of 20.0° above the horizontal
and at a speed of 11.0 m/s. (a) How far does he jump in the horizontal
direction? (Assume his motion is equivalent to that of a particle.)
7. An astronaut on a strange planet finds that she can jump a maximum
horizontal distance of 15.0 m if her initial speed is 3.00 m/s. What is the
free-fall acceleration on the planet?
8. A tire 0.500 m in radius rotates at a constant rate of 200 rev/min. Find the
speed and acceleration of a small stone lodged in the tread of the tire (on its
outer edge). (Hint: In one revolution, the stone travels a distance equal to the
circumference of its path, 2nr.)
9. A student attaches a ball to the end of a string 0.600 m in length and then
swings the ball in a vertical circle. The speed of the ball is 4.30 m/s at its
highest point and 6.50 m/s at its lowest point. Find the acceleration of the
ball when the string is vertical and the ball is at (a) its highest point and (b)
its lowest point.
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