University:
Delaware County Community College
Course:
PHY 230 | Modern Physics
Academic year:

2023
Views:

272

Pages:

1
Author:

assegaiing

● A spring with a spring constant value of 2500 is compressed 32 cm. A 1.5-kg rock is placed on top of it, then the spring is released. Approximately how high will the rock rise? 9 m ● In which situations is gravitational potential energy present? Check all that apply. A person walks up a flight of stairs. Wind lifts a balloon into the air. A weightlifter holds a barbell straight overhead. ● In which situations is elastic potential energy present? Check all that apply. A bow is drawn back from its equilibrium position. A spring toy dart gun is loaded with a dart. A bungee cord is stretched with a person at the end. ● An 80-kg hiker climbs to the top of a tall hill and builds up 470,000 J of gravitational potential energy. How high did the hiker climb? Round the answer to the nearest hundred. 600 ● ● Avi, a gymnast, weighs 40 kg. She is jumping on a trampoline that has a spring constant value of 176,400 . If she compresses the trampoline 20 cm, how high should she reach? 9 ● Which scenario generates the most gravitational potential energy? C ● Which scenario generates the most elastic potential energy? B ● The acceleration due to gravity on the moon is 1.6 m/s2. What is the gravitational potential energy of a 1200-kg lander resting on top of a 350-m hill? 672,000 J ● How many times more gravitational potential energy would the same lander have on top of a 350-m hill on Earth? It would have 6 times more gravitational potential energy.