P2.2 (Work, Energy and Momentum) Flashcards
1
Q
What is work done?
A
The amount of energy used
2
Q
How does Friction affect work done?
A
Friction affects work done as it increases the energy that is used
3
Q
What is GPE measured in?
A
J (oules)
4
Q
What is Kinetic Energy?
A
Movement
5
Q
What is GPE?
A
Energy that is stored when you are above the earth’s surface, it is converted to Kinetic Energy
6
Q
What is the conservation of momentum?
A
the law of the conservation of momentum is that if two objects collide the momentum will be the same before and after.
7
Q
If a sprinter with a mass of 50 kg runs at a velocity of 10 m/s , what is their momentum?
A
500kgm/s
8
Q
If a 2kg mass is lifted 0.4 m , how much GPE does it have?
A
8J
