What is how quickly or slowly the object is moving.
100
A car traveling 100m in 10s is traveling what speed?
What is 10m/s
100
What 2 forces act on a car once you roll it?
What is gravity and friction?
100
If an object is pushed harder in the direction that it is already moving it will move ____.
What is faster?
100
According to inertia, if no forces act on a moving object, it will
What is remain in motion?
200
On a graph showing distance versus time, what does a horizontal line connecting the plotted points represent?
What is an object that is not moving at all.
200
A rock and a brick fall off a forty foot building at the same time. The brick is three times the mass of the rock. Which one will hit the ground first?
What is - they will hit at the same time.
200
How can you make a toy car go down a ramp more slowly?
What is increase the mass?
200
6N------>[]------>6N
What is the net force?
12N Right
200
If you are riding a bike and it suddenly stops, what happens to your body?
What is keeps moving forward?
300
A jet plane travels for 5 hours covering a distance of 600 miles. Which equation is used to find the average speed of the jet?
What is speed = distance / time
300
Friction acts in a direction ________ to an object's direction of motion.
What is opposite?
300
Trucks with more powerful engines are used to moved loads that are heavier because the greater the ____ of an object, the greater the force must be to move the object.
What is mass?
300
When two unbalanced forces act in the same direction they are added? or subtracted?
What is added?
300
You put a tennis ball at the top of the ramp and let it roll down and measure how far it rolls. You repeat this five times with different types of balls. What is the control variable?
What is the height of the ramp?
400
A bicyclist travels 30 km in two hours what is her average speed?
What is 15km/hr
400
Which material when placed under a book would best prevent the book from sliding down a ramp: paper, another book, or a rubber mat?
What is a rubber mat?
400
Out of a ping pong ball, tennis ball, bowling ball, and a baseball, which one will move the fastest?
What is ping pong ball?
400
Which ball has more potential energy: the one sitting on a ledge 1 foot off the floor or the one sitting on a ledge 3 feet off of the floor?
The one that is 3 feet off of the floor
400
To determine the average speed of runners on a track team, you need the time (using a stopwatch) and all runners must run the same _________.
What is distance?
500
A salesman travels 120 km in first hour, 53 km in second hour, and 88 km in third hour. What is his average speed?
What is 87 km/h
500
Friction is increased by increasing the ____ of the objects.
What is mass?
500
A bumper car travelling 5 km/h south collides with one that is traveling 8 km/h north. If all factors are equal, which direction will the first car move after the impact?
What is North?
500
Which has greater kinetic energy: a falling rock or a rock on a ledge 10 feet in the air?
A falling rock.
500
4N<----[]--->3N
--------->9N
What is the net force?