Science Final Flashcards
If something has a constant velocity, what is its acceleration
It has zero acceleration because constant velocity means no change in speed or direction.
If something is accelerating, it could be doing what 3 things?
Slowing down, speeding up or changing direction.
The units m refer to what type of quantity?
The unit “m” refers to meters or length. Equation: F= (m)(a)
What is the unit for energy?
The unit for energy is Joules. Equation= PE= mgh KE= ½mv2
The unit “s” refer to what type of quantity?
The unit “s” refers to the quantity of time. Equation= d= (v)(t)
What is the unit for force?
The unit for force is Newton. Equation= F= (m)(a)
The units m/s refer to what type of quantity?
The unit “m/s” refers to the quantity of velocity. v= d/t
What is the unit for power?
The unit for power is Watts. Equation= P= w/t
The units m/s² refer to what type of quantity?
The unit m/s2 refers to acceleration. Equation= a= change in velocity over time.
What is the value of gravitational acceleration?
The value of gravitational acceleration is 10 m/s². Equation= AG= 10 m/s².
First Law:
First Law: Inertia: The resistance of a change in motion unless actedFirst Law: Inertia: The resistance of a change in motion unless acted upon by an outside force
Second Law:
Second Law: Acceleration: An object’s acceleration is inversely proportional to its mass and directly proportional to the applied force. Equation: a=f/m
Third Law:
Third Law: Action reaction: For every action there is an equal and opposite reaction.
If an object is not moving, what is the net force on the object?
The net force is 0N
If an object is moving at a constant velocity, what is the net force on the object?
The net force is 0N.
