At which location on the ramp does the skateboarder have the highest potential energy?
The highest potential energy for the skateboarder is at the top of the ramp.
What is one way to increase a ski jumper’s potential energy?(1 point)
One way to increase a ski jumper's potential energy is to increase their height or position above the ground before they start their jump.
As shown below, an object with a mass of 5 kg is moving at a speed of 10 m/s. Another object with a mass of 10 kg is moving at a speed of 5 m/s.
Which of the objects has higher kinetic energy?
To determine which object has higher kinetic energy, we can calculate the kinetic energy using the formula:
Kinetic Energy = (1/2) * mass * velocity^2
For the first object with a mass of 5 kg and a velocity of 10 m/s:
Kinetic Energy = (1/2) * 5 kg * (10 m/s)^2 = 250 J
For the second object with a mass of 10 kg and a velocity of 5 m/s:
Kinetic Energy = (1/2) * 10 kg * (5 m/s)^2 = 125 J
Therefore, the first object with a mass of 5 kg and a velocity of 10 m/s has higher kinetic energy of 250 J.
Which statement best describes the relationship between a baseball’s potential and kinetic energy after it is thrown? (assume the ball travels in a straight line)
The best statement that describes the relationship between a baseball's potential and kinetic energy after it is thrown is that as the potential energy decreases, the kinetic energy increases. This is because as the baseball is thrown, it loses height and potential energy, which gets converted into kinetic energy, resulting in an increase in its speed.
A student bounces a tennis ball. She drops the ball, and then it bounces back up to her. When does the ball have zero kinetic energy?
The ball has zero kinetic energy at two specific moments during its bounce. The first is when the ball is momentarily at rest at its highest point during its upward motion. At this point, all of its initial potential energy has been converted back to potential energy as it reaches its maximum height. The second moment is when the ball is momentarily at rest at its lowest point during its downward motion. In both of these instances, the ball has zero kinetic energy.
As shown below, a student places a 500-gram car at point X on a wooden racetrack in an energy transformation investigation.
What outcome is most likely if the student uses a 700-gram car instead?