Theory
A push or a pull, gravity, or friction are all examples of _________.
What are forces?
You push a block horizontally along a frictionless surface with a force of 100N. What is the net force on the block?
What is 100N?
A 45 kg child sits on a 3.2 kg tire swing. What is the overall tension (force) on the ropes that hangs from the tree branch?
What is 472 N?
How much would a 75 kg person weigh on Earth?
What is 735 N?
The equation for Newton's second law of motion.
What is Fnet=ma?
The sum of all of the forces on an object.
What is net force?
You and a friend each push a block in the same direction along a frictionless surface each with a force of 100N. What is the net force acting on the block?
What is 200N?
When boating, it is easier for a smaller boat to accelerate than a large yacht. This best illustrates which of Newton's Laws?
What is Newton's 2nd Law (F=ma)?
Weight depends on these two quantities.
What is mass and gravitational acceleration?
The outside force that stops a rolling ball in a field.
What is friction?
The tendency of an object to resist changes in velocity (or motion).
What is inertia?
You and your friend are arguing over a bag of potato chips. You pull with a force of 150N and your friend pulls in the opposite direction with a force of 75N. What is the net force acting on the bag (magnitude and direction)?
What is 75 N towards you.
How does an object's acceleration change if the net force exerted on the object is doubled?
What is the acceleration is doubled?
If you have a mass of 55 kg on Earth, then what is your weight on the moon (which has 1/6 the gravity of Earth)?
What is 90 N?
__________________ forces that keep an object at rest or in constant motion.
What is balanced forces?
The force that tends to stop or slow an object's motion.
What is friction?
A 5.0 kg flower pot falls from a railing. Calculate the net force on the flower pot. Neglect air resistance.
What is 49 N?
Is a support force that is exerted upon an object that it is in contact with?
What is applied force?
The gravitational pull on Pluto is 0.06 times the gravitational pull on Earth. How much would a 70 kg person weigh on Pluto?
What is 41.16 N?
Newton's 3rd Law
What is "every action has an equal and opposite reaction?"
The force that gravity exerts upon a body, equal to the mass of the body times the acceleration of gravity
What is weight?
In a tug of war match, your team is pulling to the left with a force of 40 Newtons. The opposing team is pulling to the right with a force of 25 Newtons. What is the net force?
What is 15 Newtons to the left?
If you were on the moon (1/6 the gravity of Earth), your mass would ____________ and your weight would ____________ on the moon.
What is stay the same and decrease?
The gravitational pull on Jupiter is 2.36 times the gravitational pull on Earth. If a person weighs 588 kg on Earth, how much would they weigh on Jupiter?
What is 1388 N?
When a basketball player shoots the ball, they apply a force to it. The acceleration of the ball depends on the force applied and the mass of the ball. Which law does this follow?
What is Newton's 2nd law of motion?