Equations Flashcards

1
Q

What is the equation for kinetic energy?

A

Ek = 0.5 x m x v^2

Ek = j
m = kg
v = m/s

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2
Q

What is the equation for gravitational potential energy?

A

Ep = m x g x h

Ep = j
m = kg
g = n/kg
h = m

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3
Q

What is the equation for work done?

A

w = f x s

w = J
f = N
s = m

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4
Q

What is the equation for power?

A

p = e/t
p = w/t

p = W
e = J
t = s
w = J

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5
Q

What is the equation for efficiency?

A

efficiency = useful power or energy output/ total power or energy input

efficiency = percentage
useful power = w
useful energy = j

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