Kinetic Energy Flashcards

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1
Q

All _____(1)_____ objects have kinetic energy. The kinetic energy of an object can be calculated if we know the objects _____(2)_____ and _____(3)_____

A

1) Moving
2) Mass
3) Speed

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2
Q

What is the word equation is used to measure kinetic energy?

A

0.5 x mass x (speed(squared))

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3
Q

Work out the work done if the:
Force = 14N
Distance = 2.6m

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A

14x2.6 = 36.4J

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4
Q

Work out the work done if:
Force = 7.4kN
Distance = 642 cm

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A

7.4 kN = 7400
642 cm = 6.42

7400 x 6.42 = 47508J = 47.508 kJ

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5
Q

Calculate the kinetic energy if:
Mass = 76 kg
Speed = 8 m/s

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A

0.5 x 76 x 64 = 2432 J = 2.432 kJ

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6
Q

What is the word equation for work done?

A

Force x distance (along the line of action)

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7
Q

What is the symbol equation for kinetic energy?

A

Ek = 1
– mv(squared)
2

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8
Q

What is the symbol equation for work done?

A

W = Fs

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