Force
What is a force?
A push or a pull exerted on an object.
What is the unit for force?
Newton (N)
Define velocity.
The speed of an object in a particular direction
What is acceleration?
The rate at which velocity changes over time.
What is a force diagram?
A visual representation of the pushes and pulls acting on an object.
Give an example of a force.
A person pushing a cart up a ramp.
What does 1 Newton represent?
The amount of force required to accelerate a 1 kg mass by 1 m/s².
How does velocity differ from speed?
Velocity includes direction, while speed is only the rate of motion
How do forces affect acceleration?
Forces can cause an object to speed up, slow down, or change direction, altering its acceleration.
Why are force diagrams useful?
They help visualize the forces acting on an object to analyze motion.
What does a force change in an object?
A force can cause a change in an object or in its motion.
How is force related to mass?
Force is equal to mass times acceleration (F = ma).
What changes an object's velocity?
Changes in speed or direction
What does the formula for acceleration measure?
change in velocity over time
Draw a force diagram for tug of war.
(Students should draw a diagram showing forces exerted by each team).
What unit measures force?
Newtons (N)
How do we calculate net force?
By adding all the forces acting on an object together.
Give an example of changing velocity.
A car speeding up or turning a corner.
Give an example of acceleration.
A car accelerating from a stop sign.
What forces are involved in tug of war?
The pulling forces exerted by both teams, and friction between the ground and feet.
Explain how a force can cause motion.
A force can change the motion of an object, such as moving it from rest.
Describe a situation with net force.
A person pushing a stationary car; if the force is greater than friction, the car moves.
Why is direction important in velocity?
It determines the object's path of motion.
How is acceleration related to velocity?
Acceleration is the change in velocity over time.
Explain how to determine net force from a diagram.
By adding the magnitudes of the forces acting in the same direction and subtracting those in opposite directions.