Vocabulary
A push or a pull on an object.
What is force?
A ball is kicked and rolls along a level field until it comes to a stop. What is the force that caused the object to stop?
What is friction?
Xiomara roller skates to the top of a hill and then starts rolling downward. What are the MAIN forces affecting Xiomara’s motion as she rolls down the hill?
What are friction and gravity?
These two things are required to calculate speed.
What is distance and time?
The force that works against movement to slows things down.
Friction
Kendall has 2 boxes. The first box has a mass of 15 kg. The second box has a mass of 25 kg. Which box will require more force to move? WHY?
What is the second box because more mass requires more force.
Sandley started pushing a bookcase across the room.Then, he removed the books and continued pushing with the same force and direction. How does removing the books affect the motion of the bookcase?
The mass is decreased, making the bookcase easier to move or move faster.
A train is traveling 10 mph. How much distance does the train travel in 5 hours?
What is 50 miles.
The type of force that is unequal, which results in movement?
An unbalanced force.
Charlene kicked the winning goal in her last soccer game. What force acted between Charlene's foot and the ball to cause the ball to move?
Push
What does a flat, horizontal line on a distance-time graph represent?
An object at rest, stopped.
This is a force between two surfaces rubbing against each other that causes an object to slow down or stop
What is friction?
Ms. Starling's class and Ms. Howard's class are playing tug-of-war. After several minutes, the students notice that the rope has not moved at all. This is the cause of this standstill.
What is a balanced force?
A toy car rolling along different surfaces will experience different amounts of friction. A toy car would encounter the most friction when rolling on which surface?
A rough surface (for example: a sandy beach, over grass, over rocks)
Rodrigo and Marcus are moving a dresser. They are arguing about which direction to move it. Rodrigo is pushing the dresser with a force of 5 newtons toward Marcus. Marcus is pushing the dresser towards Rodrigo with a force of 10 newtons. What happens to the dresser?
The dresser moves towards Rodrigo.
A runner wants to know his speed. If he runs 5 km, what other piece of information does he need to know to find his speed?
The time it took him to run it.
The tendency of an object to resist change in its state of motion.
What is inertia?
An object with greater ______________________ will take more ____________ to move or stop than an object with _______________ mass.
What is mass, energy, and less.
Which type of force moves an object toward the source of the force?
Pull
If a person wants to increase their speed they would need to run the same distance in _____ _______.
What is less time?