Force
What is a force?
a push or pull
What does the horizontal axis on a distance time graph represent?
Time
What is used to record facts and amounts during an experiment?
data table
To determine the speed of an object, you need to what two things?
time and distance
There are two forces acting on a box. One force is pulling it 25 Newtons to the right, and the other force is pulling it 17 Newtons to the left. What is the net force?
8 Newtons to the right
What is force measured in?
Newtons
What does the vertical axis on a distance time graph represent??
distance
What can be measured if you know the distance an object traveled and the amount of time it traveled?
Speed
If you see two straight, diagonal lines on a distance time graph, how can you tell which line is moving faster?
The steeper one.
How would you describe the movement of an object when forces are balanced?
still or no movement
Name a force that slows or stops motion
Friction
Show what acceleration looks like on a distant time graph.
Curved line
When you find the location of something, you are determining its ___________.
position
A car travels 60 meters in 5 seconds. What is the car's speed?
12m/s
What cause an object to move?
unbalanced forces
What force causes rain drops to fall from the sky?
gravity
If a person runs 500 meters at constant speed, then turns around and runs the 500 meters back, what would this look like on a distant time graph?
A straight diagonal line going up, then coming back down.
What type of force is friction?
contact force
A girl rides her bike down a hill at constant speed. What changes about the girl on her bike as it goes down the hill?
a. speed
b. position
c. direction
B
What characteristic of a surface will have the greatest impact on fraction?
a. Temperature of surface
b. hardness of surface
c. smoothness of surface.
C
How can you reduce friction between objects rubbing together?
Use a liquid or lubricant
A person walks to the comic book store, stays for 15 minutes, then walks back. What would this look like on a distance time graph?
Constant motion going up, horizontal line while at the sore, constant motion going down.
If your weight remains the same over the course of 5 years, what term would you use to describe it?
Constant
A car travel 393 miles in 6 hours. Determine the average speed of the car.
65.5 mph
What type of force is friction?
contact force