Net Force
This is the meaning of the word "net" in "net force."
What is total?
__________ causes acceleration.
What is force?
This is the equation for Newton's second law.
What is a = f/ m or f = m x a ?
An object in motion stays in ______________.
What is motion?
This is another word for starting speed
What is the term initial?
If two forces are going in the same direction, this is what you should do to find the net force.
What is add?
This is the acceleration of a 2 kg ball thrown with 10 N of force? (include a unit!)
What is 5 m/s/s?
Objects tend to stay in motion because they have this
What is inertia?
This is a word used to describe a change in distance over a period of time
What is velocity?
Jack and Jill move a pail of water. If Jack pushes with 10 N of force and Jill pulls with 15 N of force in the same direction, this is the net force on the pail.
What is 25 N?
An empty grocery cart and a full grocery cart are pushed with the same amount of force.
This is the cart (empty or full) that will accelerate more.
What is the empty cart?
This is the amount of force needed to make a 10 kg cart accelerate at 3 m/s/s. (include proper unit!)
What is 30 N?
This is the unit for Acceleration
What is meters per second per second m/s/s
or meters per second squared m/s^2
Jimmy pushes a box with 75 N of force. Friction works against him with a force of 10 N. This is the net force on the box.
What is 65 N?
According to Newton's second law, this is why a small sports car gets better gas mileage than a large SUV.
What is mass resists acceleration? The SUV has more mass, so it takes more force to make it accelerate.
This is the mass of a hockey puck that accelerates at 5 m/s/s when pushed with 10 N of force. (Unit!)
What is 2 kg?
This is a real life example of Newton's first law.
Many right thoughts here! Examples: Seat belt, moving forward in a car, athlete who has trouble stopping suddenly, a golf ball not moving just because you yelled at it, etc.
This is a drawing of two different balls given the same amount of force but are accelerating at different speeds
answers will vary
When an object falls, eventually it reaches a point where the downward force is equal to the upward, drag force. This term describes this moment where the net force is zero.
What is terminal velocity?
Mrs. Brown and Mr. Slight both throw a football of the same mass. According to Newton's second law, this is why Mr. Slight's football will accelerate more.
What is Mr. Slight has big muscles that can apply more force?
This is how much a 20 kg rope will accelerate when the purple team pulls with 85 N to the right and the silver team pulls with 105 N of force to the left.
What is 1 m/s/s?
This is a model/description of the relationship between mass and acceleration; and, force and acceleration
A=F/M, as force is increased accleration is increased, also, as mass increases acceleration decreases