Force, Work and Energy

A greater applied force is required to move an object with a greater mass than one with a smaller mass.

• True
• False

Tags

NGSS.MS-PS2-2

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.
• eventually come to a stop.
• change its momentum.
• accelerate.

When the net force is zero, the forces on an object are balanced. True or false.

• true
• false

How much work is done by a motor that lifts a train car on El Toro to the top of a 70-meter hill using a force of 15,000 N?

• 1,000,000 J
• 214.29 J
• 1,050,000 J
• 105,000 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

energy of position

• potential energy
• kinetic energy

Tags

NGSS.MS-PS3-2

Energy of motion

• kinetic energy
• potential energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Rubbing your hands together is a simple example of ___.

• friction
• work
• potential

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-5

What is the SI unit used to measure weight?

• Grams 
• Liters
• Pounds 
• Newtons 

Calculate the PE of a 2 kg cat perched 10 meters above the ground. 

• 20 J
• 200 J
• 2.04 J
• 200 W

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

Calculate the work needed to raise a 3 kg cat up to a height of
4 m.

• 12 J
• 0 J
• 120 J
• 1.22 J

Tags

NGSS.MS-PS3-2