The coefficient of restitution of a very hot rubber ball that reforms very quickly and has been dropped onto a concrete floor would be approximately:Question 9Select one:a.0.1b.2.5c.1.0d.0.9e.0.5
Question
The coefficient of restitution of a very hot rubber ball that reforms very quickly and has been dropped onto a concrete floor would be approximately:Question 9Select one:a.0.1b.2.5c.1.0d.0.9e.0.5
Solution
The coefficient of restitution (COR) is a measure of the "bounciness" of an object. It is defined as the ratio of the final to initial relative velocity between two objects after they collide. The COR for two objects ranges from 0 to 1.
A COR of 0 means the objects do not bounce off each other at all, while a COR of 1 means the objects bounce off each other without any loss in speed.
In the case of a very hot rubber ball that reforms very quickly when dropped onto a concrete floor, the COR would be high because rubber balls are very bouncy and the heat would make the rubber even more elastic.
Therefore, the COR of the rubber ball would be approximately 1.0 (option c).
Similar Questions
A ball (5 cm diameter, 10 kg mass) is dropped from a height of 2 m above a concrete surface (5 cm thickness). The top of the ball rebounds to a height of 60 cm above the level of the concrete surface. Using the testing procedures recommended in your laboratory manual, the coefficient of restitution would be CLOSEST to:Question 20Select one:a.0.27b.0.30c.0.52d.1.83e.0.80
A ball is dropped on the ground from a height of 1m. the coefficient of restitution is 0.6. The height to which the ball will rebound is :- 0.6 m 0.4 m 0.36 m 0.16 m
. A rubber ball is dropped from a certain height. After striking the floor, the ball bounces to 3/4th of the height it was dropped from. If the ball is initially dropped from a heigh of 100 meters, what is the total distance travelled by the ball before it comes to rest?
A rubber ball is dropped from a certain height. After striking the floor, the ball bounces to 3/4th of the height it was dropped from. If the ball is initially dropped from a heigh of 100 meters, what is the total distance travelled by the ball before it comes to rest?
Alex throws a 0.10-kg rubber ball down onto the floor. The ball's speed just before impact is 5.5 m/s, and just after is 3.5 m/s. If the ball is in contact with the floor for 0.02 s, what is the magnitude of the average force applied by the floor on the ball?Select one:a.45 Nb.27.5 Nc.17.5 Nd.0.9 Ne.10 N
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.