kinetic energy derivation of kinetic energy. kinetic energy 2 starting equations f = m x a...
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Kinetic energy
Derivation of kinetic energy
Kinetic Energy
2 starting equations F = m x a (Newton’s 2nd law) W = Force x distance
Kinetic Energy
2 starting equations Force = m x a (Newton’s 2nd law) W = Force x distance Together give
Work = (m x a) x distance
W = m x a x d
Work is MAD
Av Speed (velocity) is distance
time
Work is MAD
Av Speed (velocity) is distance
time
Distance = Average velocity x time
Work is MAD
Av Speed (velocity) is distance
time
Distance = Average velocity x time
Distance = v + u x t
2
Distance
Distance = v + u x t
2
D = ½ x v + u x t
Starting velocity is zero
D = ½ x v x t
Time
Final velocity = acceleration x time
Time = final velocity
acceleration
t = v
a
Going back a step…..
D = ½ x v x t
D = ½ x v x v
a
D = ½ x v2
a
Put into previous statements
W = m x a x d
W = m x a x ½ x v2
a
W = m x ½ x v2
W = ½ x m x v2
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