Kinetic Energy Flashcards
All _____(1)_____ objects have kinetic energy. The kinetic energy of an object can be calculated if we know the objects _____(2)_____ and _____(3)_____
1) Moving
2) Mass
3) Speed
What is the word equation is used to measure kinetic energy?
0.5 x mass x (speed(squared))
Work out the work done if the:
Force = 14N
Distance = 2.6m
Show working
14x2.6 = 36.4J
Work out the work done if:
Force = 7.4kN
Distance = 642 cm
Show working
7.4 kN = 7400
642 cm = 6.42
7400 x 6.42 = 47508J = 47.508 kJ
Calculate the kinetic energy if:
Mass = 76 kg
Speed = 8 m/s
Show working
0.5 x 76 x 64 = 2432 J = 2.432 kJ
What is the word equation for work done?
Force x distance (along the line of action)
What is the symbol equation for kinetic energy?
Ek = 1
– mv(squared)
2
What is the symbol equation for work done?
W = Fs