A cat travels 6 meters in 2 seconds. What is its speed?
6m/2s =
3 m/s
100
What tool is used to measure distance (length)?
A meterstick.
100
What is the force that pulls all objects towards Earth?
The force of GRAVITY.
100
What is the formula for density?
D = mass/volume
200
This is the total distance divided by the total time.
Average Speed
200
Two boys are pushing a rock to the right. One boy pushes with a force of 15N and the other with a force of 10N. What is the net force?
15N + 10N =
25N to the right
200
On a distance-time graph, what is plotted on the y-axis?
distance
200
What is the abbreviation for the force of compression?
Fn
200
What is the tool used to measure mass?
a balance.
300
This is the force that opposes motion (makes things slow down or stop).
Friction
300
A car is traveling 60 miles per hour. How long will it take the car to travel 180 miles?
180mi/60mi =
3 hours.
300
On a distance-time graph, what speed is indicated by a steep line?
fast speed
300
What is a balanced force?
A force that causes no change in motion.
300
What must the density of an object be in order for it to FLOAT in water?
less than 1g/mL.
400
This is determined by combining forces (adding forces that go the same way and subtracting forces that go in opposite direction).
Net Force
400
A ball is pushed to the left with a net force of 50N, the force of friction from the floor is 35N. What is the net force?
50N - 35N =
15N to the left.
400
A toad is in the middle of a race. He decides to stop and rest for a while. How would this be represented on a distance-time graph?
A flat line.
400
List the following surfaces in order of INCREASING friction (most friction at the end).
carpet, wood, ice
ICE < WOOD < CARPET
400
Why is sea water more dense than fresh water?
sea water has salt.
500
the rate at which speed changes over time (to speed up).
acceleration
500
A dog travels 3 meters in 1 second, then 7 meters in the next 4 seconds. What is his AVERAGE SPEED?
Total Distance (3m + 7m) = 10m
Total Time (1s + 4s) = 5s
10m/5s =
2m/s
500
What is the formula for SLOPE?
y2 - y1 / x2 - x1
500
What is the name given to energy that is STORED?
Potential Energy
500
Liquid A has a mass of 10g and a volume of 2cm3.
Liquid B has a mass of 1g and a volume of 2cm3.
Liquid C has a mass of 15g and a volume of 5cm3.
List how these liquids would separate inside a cup, list the liquid that would sink to the bottom first and the top liquid last.