What is a force?
A push or a pull
Is a push a force? (Yes or No)
Yes
Distance divided by time describes what property of motion?
Speed
Does friction make an object speed up or slow down?
Slow down
_____ is how fast an object is traveling
speed
The force that pulls objects toward the center of the Earth is called
Gravity
How do you calculate/solve for time?
Distance รท speed
What does a DST triangle look like?
What is friction?
When one force rubs against another
Two classes are playing tug-of-war. If the center of the rope is not moving, what must be true? (choose all that apply)
A. Both classes are pulling equally.
B. Both classes have equal mass.
C. The forces are balanced.
D. One class is pulling harder than the other.
A. both classes are pulling equally and C. The forces are balanced
If I traveled 100 miles in 2 hours, what was my speed?
50 mi/hr
The force that works against motion and tries to slow objects down is called
friction
What is momentum?
mass in motion
A boy is pulling his little sister in a wagon. If his older brother comes along and they pull on the wagon together, how will this increase in force affect the motion of the wagon?
a. it will accelerate
b. it will remain at rest
a. it will accelerate
Which two tools should be used together to measure speed? (choose 2)
A. Balance and spring scale
B. Clock and a measuring tape
C. Meter stick and stopwatch
D. Ruler and graduated cylinder
B. Clock and measuring tape
C. Meter stick and stop watch
Which object will travel farther...a bowling ball or a ping pong ball? Why?
bowling ball
What is inertia?
an object at rest tends to stay at rest
Force is measured in...
Four friends wanted to compare how they ride bikes. They all rode for 10 minutes in the same direction. The table below describes their ride. Which one rode at the greatest speed?
Friend Distance Traveled in 10 minutes (miles)
Elijah 1.0
Regina 0.5
Jordan 1.3
Devon 0.8
Jordan
Which surface may create the most friction?
a. a basketball court
b. a gravel road
c. a road covered in ice
b. a gravel road