Energy and Collision

When two objects collide their motion changes. Why does this happen?

• energy was transferred from one object to the other

• their gravity changed

• the objects lose mass

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

That which is needed to do work is called ________________.

• force

• pull

• energy

The energy an object has because it is moving is called ______________________

• potential energy

• kinetic energy

• force

Tags

NGSS.MS-PS3-1

When two objects collide, what will happen?

• both with move in the same direction

• both will move in the opposite direction

• both will stop

Tags

NGSS.MS-PS2-1

What is transferred at the instant the bat hits the ball?

• matter

• energy

• sound

• light

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

The energy of the moving ball ​ (a)   to the still ball when they ​ (b)   . With the energy it ​ (c)   during the collision, the ball that was still now is set in ​ (d)   . The ball that was moving now is ​ (e)   .

• transfers

• collide

• gains

• motion

• still

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

As Maya rides her bicycle faster, she has more (a)   to transfer.

• weight

• density

• energy

• matter

Answer explanation

As an object moves faster, it possesses more kinetic energy. Energy is the capacity to do work or transfer heat, and it increases with the speed of the object, making 'energy' the correct choice.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

When a moving object ​ (a)   with a still object of the ​ (b)   weight, the energy transfer causes the still object to ​ (c)   at the ​ (d)   that hit it.

• collides

• same

• move

• speed of the object

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

Match the following scenarios with the effect on the energy transfer of the cart.

• Keeping the groceries constant

• decreases

• Removing some groceries from the cart

• increases

• Adding more groceries to the cart

• none of these

• Adding and removing groceries simultaneously

• stays the same

Answer explanation

Increasing the weight of a moving object increases its kinetic energy, which allows it to transfer more energy upon impact or interaction. Therefore, the amount of energy it can transfer increases.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of these is NOT<i> </i>true about energy?

• it moves wind turbines

• it knocks down bowling pins

• it makes a baseball fly

• you can hold it in your hand

Tags

NGSS.MS-PS3-5