If its is a frozen hockey puck, it bounce off the ground after collision to a height of 0.3m.
Given the data in the question;
Since the hockey puck was initially in the referee's hands
- Initial velocity;
- Distance or height from which it was dropped;
- Acceleration due to gravity;
- Coefficient of restitution a frozen puck;
First we will find the velocity of the Puck when it hits the ground
From the Third Equation of Motion:
Where v is the final velocity, u is the initial velocity, a is the acceleration due to gravity and s is the distance.
Since the pluck is under gravity, we will have:
We substitute in our value and find "v"
Now, Velocity of the hock puck after it hits the ground and bounce back;
We know that; Coefficient of restitution
Hence, Relative Velocity after collision = Coefficient of restitution × Relative Velocity before collision
we substitute in our values;
Relative Velocity after collision
Relative Velocity after collision
Now, to determine how high should the puck bounced back
We use the Third Equation of Motion:
Where v is the final velocity, u is the initial velocity, a is the acceleration due to gravity and s is the distance.
Since the pluck is under gravity, we will have:
Now, since the hockey puck bounces back, it is experiencing a negative acceleration
Hence, the equation becomes
We substitute our values into the equation and find "h"
Therefore, If its is a frozen hockey puck, it bounce off the ground after collision to a height of 0.3m.
Learn more; brainly.com/question/16908019