Force
What two things can cause a force?
A push and pull
Gravity is pulling downward on a book that sits on a table. What other force is acting on the book to keep the book at rest?
The table is pushing upward on the book.
What pulls things down toward the center of Earth?
gravity
A student would like to test how a person's mass affects their motion on a swing. What should the student change from one set of trials to the next?
Use a small person in one set of trials and a larger person in the next set of trials.
Name something at rest
a pencil laying on a desk
When force makes an object move it is called what?
Motion
Give an example of unbalanced forces?
a leaf floating to the ground
Name an unbalance force
a moving ball
Earth's gravity is a force that pulls objects down to the center of ???
Earth
Which object has larger amount of mass... a ping pong ball or tennis ball
tennis ball
Name a balanced force
a sitting ball, not moving
soccer ball
What does accerlation mean?
How fast or slow something moves