Chapter 9 Forces and Motion
If you add force to an open door it _________________.
Moves
The _____________ of an object is its position.
Location
When an object rubs against another object it creates _______________.
Friction
When an object changes __________ it is in motion.
Position
The pull of ________ on an object is that object’s weight.
Gravity
Scientists measure _________ in newtons.
Weight
The __________ between two places is called distance.
Length
A __________ measures weight in the English system.
Pound
A cheetah can run at a greater __________ than a person can.
Speed
Things fall to Earth because of ______________.
Gravity
It would be hard to skate on a gravel road because the gravel increases ___________.
Friction
To measure speed you need to measure _______ and _______.
Time and Distance
The force of _________ can slow things down.
Friction
If you can run 6 miles in an hour how far can you run in one and one half hours?
9 miles
On what planet would you weigh the least?
Pluto