Contact Forces
What is a contact force? Give an example.
A contact force is a type of force that occurs when two objects are physically touching each other. (Need an example)
What is a non-contact force? Give one example.
A non-contact force is a type of force that acts on an object without any physical contact between the objects involved. Include an example.
What is a force diagram, and what does it visually represent?
A force diagram visually represents all the forces acting on an object, showing their directions and magnitudes.
When does the High School application open up?
October 7th
What is an independent variable? Provide an example from a simple experiment.
Something that is changed in the experiment. Example.
Give two examples of contact forces and explain how they act on objects.
What is
Friction
Air resistance
Normal force
How does gravity act as a non-contact force between the Earth and an object?
Weight on object, gravitational field, gravitational force
Draw a force diagram for a book resting on a table. Identify all the forces acting on the book.
Gravity, Normal Force
5 seconds: Name 5 female rappers
Answers will vary.
Define a dependent variable. Give an example.
A dependent variable is the factor in an experiment that is measured so see the effect of the independent variable. With an example.
Compare and contrast contact forces with non-contact forces. Provide examples for each.
Contact involves a force where objects are physically touching whilst non-contact involves a force without two objects physically touching
Compare and contrast gravitational force and magnetic force as types of non-contact forces. Provide an example of each.
Gravitational Force: The force that causes a dropped ball to fall to the ground. The Earth pulls the ball towards its center due to gravity.
Magnetic Force: A refrigerator magnet sticking to a metal surface. The magnet exerts a magnetic force on the metal, causing attraction.
Explain the difference between balanced and unbalanced forces. How would this be represented in a force diagram?
Balanced forces are equal in magnitude and opposite in direction, resulting in no motion change. Equal Arrows.
Unbalanced forces causes a change in shape, direction or speed. Unequal arrows.
What force keeps the Earth in orbit?
What is gravity?
In a study measuring the effect of sunlight on plant growth, identify the independent variable, the dependent variable, and one controlled variable.
Independent: Different sunlight intensities
Dependent: Stem length
Controlled: Same type of plant
What unit are forces measured in?
Newtons
Friction is a force that acts _____________ the motion of an object. Choices: a) against b) in the same direction as
Against
Draw a free body diagram of a paper airplane coasting through the air to the right.
What is...
Gravity (down)
Air resistance (left)
What is the largest organ in the human body?
The skin
Explain why it is important to keep constant variables the same in an experiment. How can changing a constant variable affect the results?
Keeping constant variables the same is crucial to ensure that any observed changes in the dependent variable are solely due to the independent variable, as altering a constant variable can introduce uncontrolled factors that skew the results.
A car is moving at a constant speed on a flat road. What are the two contact forces acting on the car?
Friction, Normal Force
The type of frictional force that acts on objects as they travel through the air.
What is air resistance?
A car is accelerating to the right on a flat road. Draw a detailed force diagram showing all the forces acting on the car
Forces include friction, gravitational, push, normal force.
What was Usher doing at 7 o'clock on the dot?
In his drop top, cruising the streets.
Design your own experiment and name the Independent, dependent and controlled variables in the experiment.
Approved by teacher