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Science Test 11/20

QuestionAnswer
Forces pulling all objects towards each other: Gravity
How many forces are required for an interaction? 2
_______ force is the upward force that acts on submerged object. Buoyant
The bouncy ball hits the ground with 5 N of forces and the ground pushes back with: 5 N
Which law is demonstrated in the bouncy ball example? Newton's Third Law
If something has a larger density than water will it float or sink? Sink
What is the density of water? 1 g/mL
The sum of all of the forces acting on an object is the _____ force Net
The gravitational pull on an object is called: Weight
What is the force that opposes the sliding of two surfaces touching each other? Friction
What makes an object have more inertia? More mass
What is the tendency to resist change in motion? Inertia
Newton's First Law: An object in motion tends to stay in motion unless acted on by an external force
Newton's Second Law: F = MA
Newton's Third Law: For every action there is an equal and opposite reaction
Three ways you can change an objects acceleration: Speed up, slow down, or change direction
Why does an object feel "lighter" underwater? It feels lighter because Archemedes's principle states that the force pushing on an object under water, is equal to the mass of the water it has pushed out of the way.
Why would a cannon ball and cannon have different accelerations? Second law. Same forces and different masses.
If you push a car by hand and the car pushes back with the same force do they cancel out? No because they are pushing on different objects
Why can a boxxer not hit a bag and a newsopaper with the same force? They have different masses.
Created by: 16esmith