Homework Help: Physics

Posted by Balthazar on Tuesday, October 5, 2010 at 4:13pm.

Ball A leaves the edge of a level table with speed Va and falls to the floor. At the instant ball A leaves the table edge, another identical ball, B, is released from rest at the height of the table top and also falls to the floor. It is observed that the balls reach the floor at the same time.

Is the kinetic energy of ball B greater than, less than, or equal to the kinetic energy of ball A? Explain your reasoning.

(Also, the impulses are caused by the weights of the balls and they both point straight down with the same magnitude, right? Do they also do equal work and have equal momentum?)

Physics - bobpursley, Tuesday, October 5, 2010 at 4:18pm
and your thinking is ? Compare the initial KE as a start.

The impulses gained are equal, and they do equal work, and do equal CHANGE in momentum. The final momentums are not equal.

Answer this Question

Related Questions

Physics - A small ball rolls horizontally off the edge of a tabletop of height h...
physics - A small ball rolls horizontally off the edge of a tabletop that is 1.2...
physics - A ball rolls with a speed of 4.4 m/s toward the edge of a table that ...
Physics - A 1.5 kg basketball is thrown to the floor. At the moment it first ...
physics - A ball of radius 0.211 m rolls along a horizontal table top with a ...
Math/Physics - A ball rolls horizontally off the edge of a tabletop that is 1.60...
Phyics - A rubber ball with a radius of 4.8 cm rolls along the horizontal ...
Physics - Two identical balls roll off the edge of a horizontal table top. One ...
Physics - A child's game consists of a block that attaches to a table with a...
physics - A ball of radius 0.2m rolls along a horizontal table top with a ...

For Further Reading

First Name:
School Subject:
Answer: