Vocabulary
What is a balanced force?
When two equal forces are acting on an object but in opposite directions.
The force of gravity changes.
False; gravity acts equily on all objects with mass.
A change in an objects motion is always caused by___________.
force.
What is gravity?
The force that attracts an object toward the center of the Earth.
Resistance is the act of being held to the Earth.
False; gravity is the force that holds objects to the Earth.
When an object changes position it is in________.
motion.
The measurement of an object's resistanse to acceleration.
Mass
Students are rolling balls down a ramp. This test is to see which ball rolls the farthest out of a tennis ball, ping pong ball, baseball, and golf ball. They let all four balls go at the same time and record the results. The baseball rolls further than the pingpong ball.
False; the ping pong ball rolls farther.
The greater the mass an object is, the ______ the force is needed to change it.
greater
The act that is exerted on one object by another.
Force
Gravity and magnetism are forces that can act from a distance.
True
Pushed and pulls are ____ that change the direction of an object.
forces
THe resistance that one surface or object has when moving over another surface or object.
Friction
Force is a push or pull needed to start, stop or change direction of s motion.
True
________ is the force thst acts in the oposite direction of the motion.
Friction