AP Physics on Energy

Hello this is my first time posting on these forums:)
I have a question on one of my homework assigments it goes like this:
A 3.00 Kg toy falls from a height of 10.0 m Just before hitting the ground, what will be its kinetic energy? (Disregard Air Resistance. g=9.81
I have a problem with this because i dont not understand energy kientic or potential . I also dont know what equations there are or how to use them.
I hope you guys can teach me how do this problem and the concepts of energy:)

Thx:)
 
Energy is conserved in a system. In this situation you have all potential energy at the top (10.0m) and all kinetic energy at the bottom right before the object hits the ground.

The potential energy is "converted" to kinetic energy. So your initial potential energy is = your final kinetic energy.

with these problems, remember to use your conversation of energy equations
initial potential energy + initial kinetic energy = final potential energy + final kinetic energy.
 
But how do you get the initial and final energy. Im confused.
 

Doc Al

Mentor
44,656
985
Your textbook should describe how to calculate the gravitational potential energy and kinetic energy.
 
Thats what im confused on how do u find initial or final of whatever energy
 

Want to reply to this thread?

"AP Physics on Energy" You must log in or register to reply here.

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving

Top Threads

Top