If an object is moving left and its slowing down, it's because of friction. What is friction doing? (pushing the object left; pushing the object right; pulling the object left; pulling the object right)
It's pulling the object right.
Because of gravity, the moon is pulled towards the earth, and the earth is...
pulled towards the moon (or, towards the sun)
An object in motion tends to...
stay in motion (keep going, etc)
Balanced forces on an object means that, for example, gravity is pulling something down with 25kg of force, and the floor is pushing up with...
25kg of force
Gravity pulls you to the ground with a lot of force. That also means...
you are pulling it to you. (two objects with mass move towards eachother)
Name two kinds of non-contact force.
gravity, magnetic, electricity (static electricity), buoyancy
Name two kinds of contact forces.
Tension, Friction, and Spring Force (possibly "object" force)
You and your dog are both pulling at a toy. The dog is winning. This is an example of ____ forces
unbalanced forces.
What type of force occurs between a bike's wheel and ground? (besides gravity)
friction
What kind of force only works with metals that have iron?
magnetic force (or, magnet)
What does the word "contact" from "contact force" mean?
touch; when two or more objects touch
Gravity is pulling the balloon down AND a tiny little mouse is pulling the balloon down by a string BUT air friction is pulling the balloon up AND flying butterflies are pushing the balloon up. What are all those forces called toegether?
net force
An object at rest (stopped) tends to ...
stay at rest (stay stopped, etc.)
A scale measures what? (mass, volume, density)
mass
Which type of force occurs when something is pulling itself back INTO shape?
spring force