Which is a good description of kinetic energy?
1 point
energy of motion
energy from the sun
The energy of motion is a good description of kinetic energy.
A person throws a ball up into the air. At which point in its path will the ball have the greatest potential energy?
1 point
when the ball hits the ground
when the ball reaches it highest point
When the ball reaches its highest point, it will have the greatest potential energy.
A student wants to determine the effect of mass on kinetic energy. She will drop two balls of the same size into a pool of water. Which investigation method should the student use?
1 point
She should drop two balls of the same mass from different heights.
She should drop two balls with different masses from the same height.
The student should drop two balls with different masses from the same height in order to determine the effect of mass on kinetic energy.
Which falling object will result in the least kinetic energy when it collides with the ground?
1 point
100 grams of dirt falling at 15 m/s
10 grams of water falling at 1 m/s
10 grams of water falling at 1 m/s will result in the least kinetic energy when it collides with the ground.
Imagine a roller coaster, where will you experience the maximum kinetic energy?
1 point
At the highest point of the coaster
At the lowest point of the coaster
Other:
Other: At the lowest point of the coaster
Four rivers have the same volume of water flow over time but fall from different heights to power hydroelectric dams. Which dam would provide the most hydroelectric power?
1 point
dam B: fall height of 75 feet
dam A: fall height of 175 feet
Other: