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Vocabulary
First Law
Second Law
Third Law
Random
100
A push of pull...
What is a force.
100
(True or False) Any time the forces are unbalanced, an object will remain at rest.
What is false.
100
Acts against the direct of motion and gets larger as the object moves faster in the air.
What is air resistance.
100
Newtons third law states, "For every action, there is an equal but _____ "
What is opposite reaction.
100
The force of _____ exists between any two objects that have mass.
What is gravity.
200
The ____ force is the total force felt by an object.
What is net.
200
(True or False) When the net force is zero, the forces on an object cancel each other out.
What is true.
200
The gravitational force on any object near Earth's surface.
What is 9.8 m/s2 or rounded, 10 m/s2.
200
One reason it's often easy to miss an action-reaction pair is because of the ______ of one of the objects.
What is mass.
200
While static friction keeps an object at rest, _____ friction slows down an object that slides.
What is sliding.
300
In order to be ______ forces, their effects must cancel each other out and not cause a change in the objects motion.
What is balanced.
300
State Newtons First Law of Motion.
What is an object at rest or moving at a constant speed in a straight path will continue to do so until a net force acts on it.
300
State Newton's Second Law of Motion.
What is an object acted upon by a net force will accelerate in the direction of the force according to the equation acceleration = net force / mass.
300
You hit a wall with a stick. The equal but opposite reaction is ____.
What is the wall pushes against the stick.
300
A force in the opposite direction of motion will cause the object to _____.
What is slow down.
400
_____ will never speed up an object.
What is friction.
400
______ friction - the type of friction that prevents an object from moving when a force is applied.
What is static friction.
400
What force must be applied to a 60-kg object to make it accelerate at 10 m/s2?
What is 600 N.
400
The time for an action-reaction situation is _____. a) instantaneous b) at least 5 seconds c) no more than 1 second d) no more than 5 seconds
What is a) instantaneous.
400
Devan travels to mars. Mars is less massive than earth. What will happen to Devan's weight and mass.
What is Devans weight will change but his mass will remain the same. Devan weight will be less.
500
The outward force from a surface.
What is normal force.
500
How can one reduce sliding friction.
What is use a wheel.
500
The speed an object reaches when the force of gravity is balanced by the force of air resistance.
What is terminal velocity.
500
If a net forces acts at an angle to the direction an object is moving, the object will follow a(n) _____ path.
What is curved.
500
A 100 kg bag of sand has a weight on 100 N. When dropped its acceleration is what?
What is 1 m/s2.