Problem: A man is riding on a flatcar traveling at a constant speed of 9.10  m/s. He wishes to throw a ball through a stationary hoop 4.90 m above the height of his hands in such a manner that the ball will move horizontally as it passes through the hoop. He throws the ball with a speed of 10.8 m/s with respect to himself.(a) What must the vertical component of the initial velocity of the ball be?(b) How many seconds after he releases the ball will it pass through the hoop?(c) At what horizontal distance in front of the hoop must he release the ball?(d) When the ball leaves the mans hands, what is the direction of its velocity relative to the frame of reference of the flatcar?(e) When the ball leaves the mans hands, what is the direction of its velocity relative to the frame of reference of an observer standing on the ground?

FREE Expert Solution
Problem Details

A man is riding on a flatcar traveling at a constant speed of 9.10  m/s. He wishes to throw a ball through a stationary hoop 4.90 m above the height of his hands in such a manner that the ball will move horizontally as it passes through the hoop. He throws the ball with a speed of 10.8 m/s with respect to himself.
(a) What must the vertical component of the initial velocity of the ball be?
(b) How many seconds after he releases the ball will it pass through the hoop?
(c) At what horizontal distance in front of the hoop must he release the ball?
(d) When the ball leaves the mans hands, what is the direction of its velocity relative to the frame of reference of the flatcar?
(e) When the ball leaves the mans hands, what is the direction of its velocity relative to the frame of reference of an observer standing on the ground?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Projectile Motion: Launch From Moving Vehicle concept. If you need more Projectile Motion: Launch From Moving Vehicle practice, you can also practice Projectile Motion: Launch From Moving Vehicle practice problems.

How long does this problem take to solve?

Our expert Physics tutor, Julia took 8 minutes and 22 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Woods' class at USF.