Vocabulary
The tendency for an object to stay at rest.
Inertia
Distance / Time
The formula for speed
Alix is playing with a soccer ball at the top of a hill. Alix kicks the ball and it rolls down the hill. What happens as the ball rolls?
The force of gravity pulls the ball downhill and the balls gains momentum due to the slope.
The force that works against movement.
Friction
Explain why a parachute makes a person falling from a great height fall more slowly.
The parachute causes air resistance, which slows the fall.
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 move faster.
Newton's law of motion that describes action-reaction pairs is the....
Third Law of Motion
The type of force which results in movement.
An unbalanced force.
A roller coaster at its highest point is demonstrating this type of energy.
Potential Energy
Pushing an empty shopping cart is easier than pushing a loaded shopping cart. This is proven by which law of motion?
Newton's Second Law of Motion
The speed of an object in a specific direction.
Velocity
What is a type of friction which slows objects moving through air?
Air resistance
Ms. Silvermans's class and Ms. Mojo's class are playing tug-of-war. After several minutes, the students notice that the rope has not moved at all. What is the possible cause of this?
The two classes have created a balanced force on the rope.
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 type of 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 towards Marcus. Marcus is pushing the dresser towards Rodrigo with a force of 10 newtons. What happens to the dresser?
The dresser moves towards Rodrigo.
Michelle drove 300 miles in 6 hours. What was Michelle’s speed?
50mph
This is a force between two surfaces that works against the motion of an object.
What is friction?
What TWO forces are acting together to keep a cup balanced on a table?
Gravity and the force of the table holding the cup up.
A car and a truck travel at the same speed on a road in the same direction. Both vehicles slow down with the same stopping force. Why does the truck need more distance for the car to stop?
The truck has more mass.
During swimming, a swimmer moves ahead. The water pushes back on the swimmer as the swimmer pushes against it. This describes which law of motion?
Newton's Third Law of Motion
Lola roller skates to the top of a hill and then starts rolling downward. What type of energy is this?
Kinetic Energy