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)
Responses
when the ball reaches its highest point
when the ball reaches its highest point
when the ball is still rising
when the ball is still rising
when the ball hits the ground
when the ball hits the ground
when the ball leaves the person’s hand
when the ball leaves the person’s hand
Use the table of information from an investigation to answer the question.
Student Depth of Object in Sand (cm)
Maddie 1.8
Naveed 4.0
Two students drop an object into sand from a height of 1.5 meters. They record the depth of the hole made in the sand by each student’s object. What is the most likely explanation for the results?
(1 point)
Responses
Naveed’s object has less mass.
Naveed’s object has less mass.
Maddie’s object has a smaller width.
Maddie’s object has a smaller width.
Maddie’s object had a faster drop speed.
Maddie’s object had a faster drop speed.
Naveed’s object had greater kinetic energy.
Maddie’s object had a faster drop speed.
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)
Responses
She should drop two balls with different masses from different heights.
She should drop two balls with different masses from different heights.
She should drop two balls of the same mass from the same height.
She should drop two balls of the same mass from the same height.
She should drop two balls of the same mass from different heights.
She should drop two balls of the same mass from different heights.
She should drop two balls with different masses from the same height.
She should drop two balls of the same mass from the same height.
Which falling object will result in the least kinetic energy when it collides with the ground?(1 point)
Responses
10 grams of dirt falling at 2 m/s
10 grams of dirt falling at 2 m/s
100 grams of water falling at 10 m/s
100 grams of water falling at 10 m/s
10 grams of water falling at 1 m/s
10 grams of water falling at 1 m/s
100 grams of dirt falling at 15 m/s
10 grams of water falling at 1 m/s
Energy of Motion Unit Test
6 of 106 of 10 Items
Question
Use the image to answer the question.
This image of a roller coaster is designed to show important information about potential and kinetic energy. One of these labeled pieces of information is incorrect. Which information is wrong, and why?
(1 point)
Responses
The spot marked “maximum gravitational potential energy” should be on the lowest point of the roller coaster, at the far left side on the bottom.
The spot marked “maximum gravitational potential energy” should be on the lowest point of the roller coaster, at the far left side on the bottom.
The roller coaster would only have potential energy at the point labeled “gravitational potential energy and kinetic energy.”
The roller coaster would only have potential energy at the point labeled “gravitational potential energy and kinetic energy.”
The spot with the “maximum kinetic energy” should be on the lowest point of the roller coaster, at the far left side on the bottom.
The spot with the “maximum kinetic energy” should be on the lowest point of the roller coaster, at the far left side on the bottom.
The roller coaster would only have kinetic energy at the point labeled “gravitational potential energy and kinetic energy.”
The spot with the “maximum kinetic energy” should be on the lowest point of the roller coaster, at the far left side on the bottom.
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)
Responses
dam A: fall height of 175 feet
dam A: fall height of 175 feet
dam C: fall height of 135 feet
dam C: fall height of 135 feet
dam D: fall height of 100 feet
dam D: fall height of 100 feet
dam B: fall height of 75 feet