Gravity and Inertia

What is gravity?

• A resistance to change. 
• A force that attracts and repels objects.
• A force that pulls objects "in" or together.
• A force that causes objects in motion to stay in motion. 

Gravity attracts all objects towards one another.

• False
• True
• It depends

Every object in the universe attracts every other object.

• True
• False

Which of the following is an example of gravity?

• Slamming on the breaks in your car and flying forward. 
• The last 4 fruit loops in your ceral bowl coming together to form a circle. 
• Moving up and down on a rollercoaster. 
• Miss Rindy pushing open a door. 

Two factors impacting the strength of the force of gravity between 2 objects are...

• mass and distance 
• mass and matter
• distance and weight 
• weight and mass

What is inertia? 

• A force that attracts and repels objects. 
• An object in motion that was to stay in a straight path unless it is acted upon by another force. 
• A force that pulls objects "in" or together. 
• A force that is measured in Newtons. 

Because of inertia, a moving object will keep ________.

• at rest
• moving
• in one spot
• inertia 

To change the motion of an object, inertia must be overcome by a __________ acting on the object.

• temperature
• speed
• force
• velocity

Because of inertia, a resting object will remain at ________.

• rest
• a constant speed
• school
• inertia 

Which of the following is an example of inertia?

• Slamming on the breaks in your car and flying forward.
• An apple falling off of a tree. 
• Running at a cross country event.