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# Science

### Science: Force, gravity, friction, and Newton's Law Study Stack

What is any use or pull/ an action that can change motion? Force
What is the sum of all the forces acting on an object? Net force
What is the unit for Force Newton
What is the force applied and the object doesn't mov? Balances forces
What is force applied and the object moves int the direction of the force? Unbalances forces
What is a force that opposes motion cause by rubbing 2 objects together? Friction
What is a term used to measure the ability of an object to resist a charge in its state of motion? Inertia
What is an attractive force between any two objects that depends on the masses of the objects and the distance between them? Gravity
What is the amount of matter in an object? Mass
What is the gravitational force exerted on an object? Weight
Identify Newtons's 3 laws in these examples: -a rocket blasting off from earth -a golfer using a bigger swing to drive the ball to the fairway - The football will remain in motion util the unbalanced force of gravity stops it - 3rd law - 2nd law - 1st law
It takes _______ force to accelerate a light object less
It takes _______ force to accelerate a heavy object more
As mass is ________ acceleration decreases increases
As mass is ________ acceleration increases decreases
What is the formula for Force? Force = mass x acceleration
What is the formula for Weight? Weight = mass x gravitational strength
What is the number an units for gravitational strength? 9.8 m/s/s
What are the 4 types of friction? Static friction; Sliding friction; Rolling friction; Fluid friction
Explain what frictional forces a truck might experience as more weight is added to its bed? As more wight is added to the truck, more force pushes the tires against the road, resulting in more friction. The truck also experiences fluid friction
What are some thing you can do to increase frictional force to be helpful? Add salt to an icy sidewalk; have treads on tires
What are some things you can do to decrease fractional force to be helpful? Use a dolly under a washing machine while moving it; Use a lubricant for the engine of a car; Activate the air jets for an air hockey game
What is the Law of Universal gravitation? Any two objects attract each other bases on mass and distance. Mass increase for of gravity
As you increase the mass of an object what does this due to its force of gravity? As you increase the mass, the gravitational force increases
As you increase the distance between objects, what does this do to the force of gravity? The force of gravity decreases.
What does Newton's First Law state? An object at rest will remain at rest unless acted on by an outside force
What does Newton's Second Law state? If you apply more force to an object, it accelerates at a higher rate
What does Newton's Third Law state? For every action there is an equal and opposite reaction
Explain using Newton's Laws, if a golfer adjust his wing what will happen? (Short Answer) If he uses more force there will be more distance, and if he uses less force there will be less distance.
Explain how wearing a seatbelt in a moving car demonstrates Newton's first law of physics. (Short Answer) The passenger remains in motion, unless the unbalanced force of the seatbelt troops him. If the seatbelt didn't stop him he would fly out the windshield.
Does balanced forces create movement or no movement? No movement
Does Unbalances forces produce movement or no movement? Movement
Created by: kkmcleod