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Flashcards in Physics - energy Deck (5)
0

Energy (2)

The ability to change or cause change

No energy = no change

1

Potential energy

Energy of what my happen

Has potential to change

Ep = mgh

2

Kinetic energy

Energy of motion

Ek = 1/2mv²

3

H =

(Vsinθ)² / 2g

4

What equals vsinθ ?

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