Mechanical Work

How is gravity affected by mass?

• the larger the mass of the object, the greater the gravity
• small objects have no gravity
• gravity is not affected by mass of objects, whether large or small

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NGSS.MS-PS2-4

What is the standard unit force is measured in?

• Newtons
• pounds
• grams
• meters

 The law of conservation of energy states that when one form of energy is converted into another,

• Energy is destroyed in the process
• Energy is created in the process
• No energy is destroyed in the process
• Energy is lost in the process

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How do we calculate work?

• W = F * d
• w = f * D
• W = F * D
• w = f * d

How much work is being done with 200 N of force over 426 meters?

• 85,200 J
• 45,620 J
• 90,480 J
• 62,329 J

Tags

NGSS.MS-PS3-5

The SI unit of work is?

• Joules
• Watts
• Newtons
• meters

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NGSS.MS-PS3-5

If 150 Joules of work is needed to move a box 10 meters, what force was used? 

• 1500 N
• 15 N
• 1.5 N
• 150 N

If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?

• 272 m
• 17 m
• 4.05 m
• 272 cm 

Tags

NGSS.MS-PS3-4

A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?

• 12 J

• 8 J

• 20 J

• 5 J

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NGSS.MS-PS3-5

A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?

• 200 J

• 80 J

• 5 J

• 2000 J

Tags

NGSS.MS-PS3-5