Physics 5&6R Conservation Review

In any collision (crash) the ______ is ALWAYS constant

• Total Momentum
• Potential Energy
• Total Velocity
• Kinetic Energy

What happens to objects in an elastic collision? 

• the objects stick together after the collision. 
•  the objects bounce off each other after the collision.

What happens to objects in an inelastic collision?

•  the objects bounce off each other after the collision.
• the objects stick together after the collision. 

The total momentum of 2 carts is 20 kg*m/s before colliding. Describe the momentum of the carts after the collision

• The total is -20 kg*m/s
• The total is 20 kg*m/s
• The total is 0 kg*m/s
• The total is 40 kg*m/s

When is momentum conserved?

• During elastic collisions but not inelastic collisions
• During inelastic collisions but not elastic collisions
• Momentum is always conserved in isolated systems
• Momentum is never conserved in collisions

Choose the correct statements about point A

• There is no Kinetic Energy

• There is no Potential Energy

• There is Kinetic Energy

• There is Potential Energy

• There is Mechanical Energy

At point A, the potential energy is 500 J. Choose the correct statements about the other points

• At point C, the kinetic energy is 500 J

• At point B, the total mechanical energy is 500 J

• At point D, the total mechanical energy is 500 J

• At point A, the total mechanical energy is 500 J

• At point C, the kinetic energy is less than 500 J

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?

• mechanical to heat

• sound to mechanical

• potential to kinetic

• kinetic to potential

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NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A ball is projected into the air. Where is potential energy the greatest?

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NGSS.MS-PS3-2

Which point on the roller coaster's path represents the maximum potential energy?

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NGSS.MS-PS3-2