Physics - energy Flashcards
0
Q
Potential energy
A
Energy of what my happen
Has potential to change
Ep = mgh
1
Q
Energy (2)
A
The ability to change or cause change
No energy = no change
2
Q
Kinetic energy
A
Energy of motion
Ek = 1/2mv²
3
Q
H =
A
(Vsinθ)² / 2g
4
Q
What equals vsinθ ?
A
Using conservation of energy - Vy = V in 1/2mv² = mgh
Using distance formula (df = di + vt + 1/2at²) -
- df = h
- di = 0
- vt = Vy = vsinθt
- t = Vsinθ/g because of df = vi + at (Vi = vsinθ)
Using motion equation - (vf² = vi² + 2aΔd)
- Vf² = 0 (at rest)
- Vi = vsinθ
- a = -g
- d = h
