If an apple falls from a tree in which direction does the force of friction act on the apple?
What is up?
100
Two forces that are not equal.
What are unbalanced forces?
100
How can you make a chair move?
What is apply a force to it?
100
A pitcher throws a ball 20 meters in 4 seconds, how fast was the pitch?
What is 5 m/s?
100
Inertia, Momentum, or Both?
There are two balls. One is rolling and one is sitting on the ground.
What is inertia?
200
Objects with more inertia with experience more or less friction?
What is more friction?
200
Two teams are playing tug of war and the rope is not moving in either direction. What type of forces are being applied to the rope?
What are balanced forces?
200
Force is measured in this unit.
What is a Newton.
200
An object is moving at a constant speed and a balanced force is applied in the opposite direction the object is moving, what will most likely happen?
What is the object will slow down and eventually stop moving.
200
A blue car is turning a corner, a red car is stopped at a stop sign. Which car has inertia but not momentum?
What is the red car?
300
Two balls are rolled, one on the carpet and the other on the tile floor. If the same amount of force is applied to both, which will roll further and why.
What is the ball on the tile because there is less friction to slow it down.
300
What two kinds of force are required to open doors?
What are pushes and pulls?
300
A 20 N pull north and a 20 N pull south are what kind of forces?
What are balanced forces?
300
In order to calculate speed or velocity what two things do you need to know?
What is distance and time?
300
When flying a kite both gravity and the force of wind are important, why?
What is because the force of the wind must be greater than the force of gravity?
400
If you push a skateboard and start it rolling along the ground, what will most likely happen tot he skateboard?
What is it will keep rolling until friction or another force stops it?
400
Which force always acts in the opposite direction of the direction an object is moving?
What is friction?
400
Forces that have a net force greater than zero.
What are unbalanced forces?
400
A bus is traveling 50 mph to a town 200 miles away. How long will the bus rid be?
What is four hours?
400
You are traveling with your family. As you look out the window you notice markers along the road every mile. As you watch out the window the markers are passing in shorter amounts of time? Why?
What is because the car is moving faster?
500
After an ice storm John's dad spread sand on the driveway. When John asked his dad why he said...
What is because sand increases friction between the tires and the driveway.
500
What balanced forces are acting on a book sitting on a table?
What are gravity pulling on the book and the table supporting the book?
500
How are balanced forces different from unbalanced forces?
What is only unbalanced forces can change the motion of objects.
500
How are speed and velocity the same?
What is both measure distance over time?
500
What force must be overcome for a tow truck to lift the front end of a car?