Define It!
Forceful Forces
In Motion
Friction
Digging Into Data
100
Define the following term.
Kinetic Energy
Example Response: The energy of motion.
100
Complete the following statement.
An object at rest will remain at rest unless a __________ acts upon it.
force
100
What will happen to the speed of a soccer ball that is sitting on a soccer field if a child kicks it?
It will not move.
The speed would increase.
The speed would decrease.
b. The speed would increase.
100
True or False?
Friction is a force that can stop an object in motion.
True
100
Using the graph, we can conclude that the greater the force, the _____ the speed.
faster
slower
faster
200
Define the following term.
Motion
Example Response: The direction and speed of an object.
200
Which object would require the most force to move?
Ant or Camel?
Camel
200
What will happen to the direction of a baseball if a pitcher throws the ball to the batter and the batter strikes the ball with the bat?
The ball will fall by the batter.
The ball would change direction, back to the field.
The ball would keep going in the same direction the pitcher threw it.
b. The ball would change direction, back to the field.
200
True or False?
Adding soap to a slip and slide would increase the amount of friction.
False
200
What was the speed of the object when a force of
4 N. was applied?
**A Newton (N.) is the unit of force.**
3 m. per second
300
Define the following term.
Force
Example Response: A push or pull that causes an object to move, stop, change speed, or change direction.
300
Which object would require the most force to move?
Book or Paperclip
Book
300
Which would require more force?
Rolling a bowling ball or Rolling a marble
Rolling a bowling ball.
300
Which of the following would cause the greatest amount of friction?
tile
wood
carpet
c. carpet
300
Using the graph, which surface caused the greatest amount of friction?
Carpet
400
Which term has the following definition?
How fast an object is moving.
Speed
400
Luis set up a maze using dominos. He tapped the first domino and then the rest fell.
Was a push or a pull used to make the dominos fall?
A push
400
Raquel rolls a toy car across a straight line. As the car is moving along the line, her brother rolls a golf ball into the toy car.
What will most likely happen to direction of the toy car after it is struck by the golf ball?
The toy car will immediately stop moving.
The toy car will continue rolling along the straight line.
The toy car will change directions and no longer move along the straight line.
c. The toy car will change directions and no longer move along the straight line.
400
Which of the following would cause the least amount of friction?
grass
ice
dirt
b. ice
400
Using the graph, which surface caused the least amount of friction?
Glass
500
Which term has the following definition?
A force that opposes the motion of an object.
Friction
500
Gabe is walking his dog on a leash. His dog suddenly sees a squirrel and begins to run. Gabe falls forward.
Did a push or a pull cause Gabe to fall forward?
A pul
500
Francis gets an empty grocery cart at the market. She can quickly push it through the aisles.
If Francis pushes the cart with the same force the entire time she is at the market, what will happen to the speed of the cart as she fills it with groceries?
Example Response: The cart will slow down since it has a greater mass.
500
Quinn is riding his bike. He starts out riding his bike on the smooth road. Then, he rides his bike on a bumpy dirt trail. Finally, he rides his bike through a field of grass.
Which surface would have greatest amount of friction?
The field of grass.
500
Why do you think the red car was the fastest if the same amount of force was used to push each car?
Example Responses: The red car has the least amount of mass. The tires of the red car produced the least friction.