Mechanical Energy

Determine the POTENTIAL energy of the cart at position "B"

(a)  

Tags

NGSS.MS-PS3-2

Determine the POTENTIAL energy of the cart at position "C"

(a)  

Tags

NGSS.MS-PS3-2

In reality, as the roller coaster moves along the track, some energy would be "lost". Where does the "lost" energy go? **CHOOSE TWO (2)**

• It disappears completely and never comes back

• It is transformed into thermal energy by friction

• It is transformed into sound energy

• It turns into matter

Tags

NGSS.MS-PS3-5

NGSS.MS-PS1-4

This graph relates speed and time of four cars (1, 2, 3, 4) traveling along a straight highway. Which two cars move with zero acceleration?

• 1 and 4

• 2 and 3

• 1 and 2

• 3 and 4

Tags

NGSS.MS-PS3-1

A Physical Science student wants to measure the speed of a toy car at the bottom of a hill. Which information is needed to calculate speed?

• The mass of the car and the height of the hill

• The friction of the surface of the hill and the mass of the car

• the length of the hill and the time for the car to go down the hill

• the length of the car and the time for the car to go down the hill

Tags

NGSS.MS-PS3-1

A 30kg-girl run at a rate of 7 m/s, what is the kinetic energy?

• 2,940 J

• 345 J

• 735 J

• 972 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the definition of Energy?

• a change in speed or direction

• the ability to cause changes, apply a force, or do work

• a force that works against motion as surfaces rub together

• the energy an object has because of its motion

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Which of Newton's laws best describes inertia?

• 1

• 2

• 3

• All of the above

This guy figures out that space is a thing.

• Isaac Newton

• Albert Einstein

• Nikola Tesla

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

A type of friction that occurs when air pushes against a moving object causing it to decelerate.

• surface area
• air resistance
• velocity