Question

1.Use the diagram to the right to answer the following questions: Person has a mass of 100 kg

1.Calculate the person’s gravitational potential energy before they jump off the platform. SHOW WORK!



2.Calculate the person’s gravitational potential energy when they reach the trampoline on the ground. SHOW WORK!



3.Calculate the person’s gravitational potential energy when they bounce up to their final position. SHOW WORK!

Answer 1

Answer:
1. 9800J
2. 0J
3. 4900J
Explanation:
Gravitational potential energy (GPE) formula is given by:
GPE= mgh
Where: m: is the mass of the person = 100 kg
g: is the gravity of earth = 9.8 N/kg approximately
h: is the height between the position of the person and the ground.
1. h= 10m
GPE= mgh =(100)(9.8)(10)= 9800J
2. h=0m
GPE= mgh =(100)(9.8)(0)= 0J
3. h=5m
GPE= mgh =(100)(9.8)(5)= 4900J

Answer 2

See below ~

Explanation:

#1)

• Gravitational Potential Energy = mgh
• 100 x 9.8 x 10
• 9800 J
• 9.8 kJ

#2)

• mgh
• 100 x 9.8 x 0
• 0 J

#3)

• mgh
• 100 x 9.8 x 5
• 49 x 100
• 4900 J
• 4.9 kJ