This is the meaning of the word "net" in "net force."
What is total?
This is the equation for Newton's second law.
What is f = m x a ?
Newton's 3rd Law states that every force has an _______ but ________ force.
What is equal but opposite?
If two forces are going in the same direction, this is what you should do to find the net force.
What is add?
Mass __________________ acceleration.
What is resists?
This is the nickname for Newton's 1st law.
What is the law of inertia?
When Serena Williams hits a tennis ball with her racket, the tennis ball experiences _________ force compared to the tennis racket.
What is the same?
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?
When a bowling ball and basketball are dropped from the same height at the same time, this is the timing of how they land.
What is they land at the same time?
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 economy 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 explains why a flat paper and crumpled paper fall at different rates.
What is air resistance?
Josh and Jessie are each pushing on a refrigerator with 25 N. James, being the trickster that he is, pushes on the fridge with 30 N against Josh and Jessie. This is the net force on the fridge.
What is 20 N?
Mr. Hwang and Mr. Moore both throw a football of the same mass. Mr. Hwang's football accelerates more. According to Newton's second law, this is why.
What is Mr. Hwang applied more force?
This is required to change the motion of a moving object or to change the motion of an object at rest.
What is an unbalanced/outside force?
A 5 kg bowling ball is dropped from the top of a building. This is the force that the bowling ball experiences.
What is 50 N? (a = 10 m/s2 for gravity)