If the change in kinetic energy of a hockey puck hit across the ice by a hockey stick is 200 joules, and the average force that the stick exerts on the puck is 200 N, what is the distance that the force is exerted over?
a 0.4
b 0.6
c 0.8
d 1
e 1.2
Why did the hockey puck bring a tape measure to the game? Because it wanted to measure the distance it traveled after being hit by the stick!
To find the distance, we can use the work-energy principle:
Work = Change in kinetic energy
Work = Force × Distance
So, we can rearrange the equation to find the distance:
Distance = Work / Force
Plugging in the numbers, we get:
Distance = 200 J / 200 N = 1 meter
So, the distance that the force is exerted over is option d) 1.
To find the distance that the force is exerted over, we can use the work-energy theorem:
Work = Change in Kinetic Energy
The work done on an object is equal to the force applied multiplied by the distance over which the force is exerted:
Work = Force * Distance
Given that the change in kinetic energy is 200 J and the average force is 200 N, we can substitute these values into the equation:
200 J = 200 N * Distance
To find the distance, we can rearrange the equation:
Distance = 200 J / 200 N
Simplifying, we find:
Distance = 1 meter
Therefore, the correct answer is option d) 1 meter.
To find the distance that the force is exerted over, we can use the equation:
Work = Force × Distance
In this case, the work done on the hockey puck is equal to the change in kinetic energy. Therefore, we have:
Work = Change in Kinetic Energy = 200 Joules
Force = 200 N
We can rearrange the equation to solve for distance:
Distance = Work / Force
Distance = 200 Joules / 200 N
Distance = 1 meter
Therefore, the correct answer is option d) 1 meter.