Force, Energy and Motion

A train traveling 60 mph slows down as it comes to a stop. This is an example of _____________

• Acceleration
• Distance
• Speed
• Velocity

Tags

NGSS.HS-PS2-1

A fan is turned off in the living room. The fan slows down and comes to a rest as the forces become _______

• Frictional
• Balanced
• Unbalanced 
• Restricted

Tags

NGSS.MS-PS2-2

John pushes a chair up a ramp into a moving truck. Sally lifts the chair straight up to the moving truck. Sally says that he is doing more work because lifting the box takes more energy. Is Sally correct? 

• Yes, using more force to move an object does more work.
• No, John is doing more work because he has to travel farther to move the box up the ramp.
• No, they are doing the same amount of work because their force multiplied by their distance is the same. 

Newton's third law states for every action their is an equal or opposite reaction. Which is the best example

• The air rushing out of a balloon, causing it to move across the room. 
• Flying forward in you seat when the brakes a slammed on.
• A weight lifter dropping the bar.
• A softball flying on the air

Tags

NGSS.MS-PS2-1

Looking at the roller coaster, were does the cart have the most potential energy?

• A
• B
• C
• D

Tags

NGSS.MS-PS3-2

When a car suddenly stops at a red light, a pizza lying in the passengers seat flies in to the windshield. Why does the pizza fly forward?

• The pizza loses its backward force
• The pizza's inertia causes it to continue moving. 
• The friction of braking transfers energy to the pizza. 

Tags

NGSS.HS-PS2-1

How much force is needed to accelerate a 5 kg marble at a rate of 2.5 m/s?

• 12.5
• 10
• 2
• 12

Tags

NGSS.MS-PS2-2

If William pushes a 75N sofa up a ramp that is 5 meters long, what is the amount of work that William does?

• 400 Joules
• 350 Joules
• 3 Newtons
• 375 Joules

Tags

NGSS.MS-PS3-4

On a distance-time graph, what does not show constant speed?

• A steep line
• a line that goes up, horizontal and down
• A line that slopes

Tags

NGSS.MS-PS3-1

On a distance-time graph, what shows an object going back to where it started?

• If the distance goes back to 0
• If line goes straight up
• If the line is at rest

Tags

NGSS.MS-PS3-1