W4 11.13

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter6: Momentum, Impulse, And Collisions
Section: Chapter Questions
Problem 45P: A tennis ball of mass 57.0 g is held just above a basketball of mass 590 g. With their centers...
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11.13

11
for the precision of this problem, the values are similar.)
What is the average force between a cricket bat and ball during collision? For this rough calculation, let's assume that the ball's initial and final velocities with respect to
the bat are antiparallel and have magnitudes of about 100 kph. Suppose the collision lasts about 1 ms. A cricket ball has a mass of 0.16 kg.
The average force between bat and ball is
N. Do not use exponent notation.
(I'm using conservative values here: bowlers (the people who deliver the ball to batsmen) bowl at over 150 kph and, even though air resistance slows the ball down
considerably by the time it reaches the batsman, the bat is often travelling rapidly in the other direction. So both velocities used here are probably exceeded substantially
in professional games. I'm guessing that, because the cricket ball is hard, the collision might last less about 1 ms.)
The Earth is 8 light minutes from the sun and the speed of light is 3 x 10° m.s¯1. Let's assume that earth's orbit is exactly circular. Its mass is 5.972 x 1024 kg.
Using the values given above (and your knowledge about time units), determine the magnitude of the gravitational force that the Sun exerts on the Earth.
The magnitude of the force is newtons.
Format: if your answer is 2 x 10° N, enter 2*10^3 (and do think about significant figures)
Transcribed Image Text:11 for the precision of this problem, the values are similar.) What is the average force between a cricket bat and ball during collision? For this rough calculation, let's assume that the ball's initial and final velocities with respect to the bat are antiparallel and have magnitudes of about 100 kph. Suppose the collision lasts about 1 ms. A cricket ball has a mass of 0.16 kg. The average force between bat and ball is N. Do not use exponent notation. (I'm using conservative values here: bowlers (the people who deliver the ball to batsmen) bowl at over 150 kph and, even though air resistance slows the ball down considerably by the time it reaches the batsman, the bat is often travelling rapidly in the other direction. So both velocities used here are probably exceeded substantially in professional games. I'm guessing that, because the cricket ball is hard, the collision might last less about 1 ms.) The Earth is 8 light minutes from the sun and the speed of light is 3 x 10° m.s¯1. Let's assume that earth's orbit is exactly circular. Its mass is 5.972 x 1024 kg. Using the values given above (and your knowledge about time units), determine the magnitude of the gravitational force that the Sun exerts on the Earth. The magnitude of the force is newtons. Format: if your answer is 2 x 10° N, enter 2*10^3 (and do think about significant figures)
How does the force that the Sun exerts on the Earth compare with the Earth's force on the sun?
O The magnitude of the force the earth exerts on the sun equals that of the force that the sun exerts on the earth.
O The magnitude of the force the earth exerts on the sun exceeds that of the force that the sun exerts on the earth.
The magnitude of the force the earth exerts on the sun is less than that of the force that the sun exerts on the earth.
Transcribed Image Text:How does the force that the Sun exerts on the Earth compare with the Earth's force on the sun? O The magnitude of the force the earth exerts on the sun equals that of the force that the sun exerts on the earth. O The magnitude of the force the earth exerts on the sun exceeds that of the force that the sun exerts on the earth. The magnitude of the force the earth exerts on the sun is less than that of the force that the sun exerts on the earth.
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