Physics

What happened during A to B point?

• not moving
• increasing speed at a constant rate
• moving at a constant speed
• moving at 10 m/s² acceleration

Tags

NGSS.MS-PS3-1

A girl throws a ball straight up in the air. When does the ball accelerate down?

• On the way up.

• On the way down.

• At the top.

• All of the above

Tags

NGSS.HS-PS2-1

how much work done is applied when you lift a 2 N bag at a distance of 2 m? (work= F x D)

• 4 J

• 3 J

• 5 J

• no work done

The Law of Conservation of Energy states that

• energy cannot be created nor destroyed, only transformed or transferred
• energy can be destroyed but not created
• energy can be created but not destroyed

Tags

NGSS.MS-PS3-5

How much KE does a moving 6 kilogram object have if it moves with a velocity of 3 m/s?

• 27 J
• 18 J
• 9 J
• 2 J

Tags

NGSS.MS-PS3-1

At which position does the child on the swing have the most gravitational potential energy?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2

Why is solar energy considered renewable energy?

• It's cheaper than fossil fuels
• The sun's energy would not run out for billions of years
  
• Solar energy recharges batteries
• All of them

When two materials are rubbed together ,...…………………. transfer from one to another.

• electrons

• protons

• neutrons

What is the definition of current?

• The rate of flow of charge

• A measure of the difference in energy

• How difficult it is for electrons to flow

• The rate of energy transfer

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the function of a cell?

• A conductor that connect the components together.

• A method of opening or closing the circuit.

• A source of electromotive force that drives electric charges around the circuit.

• A load in which moving charges can do a useful job.

Tags

NGSS.MS-LS1-2