A rookie quarterback throws a football with an initial upward velocity component of 12.0 m/s and a horizontal velocity component of 20.0 m/s. Ignore air resistance, (a) How much time is required for the football to reach the highest point of the trajectory? (b) How high is this point? (c) How much time (after it is thrown) is required for the football to return to its original level? How does this compare with the time calculated in part (a)? (d) How far has the football traveled horizontally during this time? (e) Draw . x - t , y - t , v x - t , and v y - t graphs for the motion.
A rookie quarterback throws a football with an initial upward velocity component of 12.0 m/s and a horizontal velocity component of 20.0 m/s. Ignore air resistance, (a) How much time is required for the football to reach the highest point of the trajectory? (b) How high is this point? (c) How much time (after it is thrown) is required for the football to return to its original level? How does this compare with the time calculated in part (a)? (d) How far has the football traveled horizontally during this time? (e) Draw . x - t , y - t , v x - t , and v y - t graphs for the motion.
A rookie quarterback throws a football with an initial upward velocity component of 12.0 m/s and a horizontal velocity component of 20.0 m/s. Ignore air resistance, (a) How much time is required for the football to reach the highest point of the trajectory? (b) How high is this point? (c) How much time (after it is thrown) is required for the football to return to its original level? How does this compare with the time calculated in part (a)? (d) How far has the football traveled horizontally during this time? (e) Draw .x-t, y-t, vx-t, and vy-t graphs for the motion.
A man throws a football with an initial upward velocity component of 15.0 m/s and a horizontal velocity component of 25.0 m/s. Air resistance may be ignored. A) How much time is required for the football to reach the highest point of the trajectory? B) How high is this point? C) How much time (after being thrown) is required for the football to return to its original level? How does this compare with the time calculated in part(a)? d) How far has it travelled horizontally during this time?
A quarterback throws a football with an initial velocity of 25 m/s at an angle of 40 degrees above the horizontal. Calculate the following:
a) The maximum height the football reaches above its starting point.b) The time it takes for the football to reach its maximum height.c) The horizontal distance the football travels before it hits the ground.d) The total time the football is in the air.
(Note: Assume that air resistance is negligible, and use a standard acceleration due to gravity of 9.8 m/s².)
Suppose I throw a rock horizontally with an initial speed of 30 m/s. Suppose my release point is 2 m above
the ground.
(a) How long does it take for the rock to hit the ground?
(b) How far in the horizontal direction does the rock travel?
(c) What is the speed of the rock right before it hits the ground?
Chapter 3 Solutions
University Physics with Modern Physics (14th Edition)
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