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What is Newtons 2nd Law
a=F/m or F=ma2
what do you use when you have the A, v,and the Vo to find the time.
v=Vo+at
what is newton's 3rd law?
every action force has to be a reaction force equal in strength and opposite in direction
According to the National Center for Health Statistics, the average mass of an adult American male is 86 kg. Determine the mass and the weight of an 86-kg man on the moon where the gravitational field is one-sixth that of the Earth.
mass: 86 kg
weight: 140 N
<---3N (2kg) ---------> 9N
3 m/s2
What is a Vector?
A Vector has magnitude(size) and direction.
what is kg
mass
a 10kg mass on a surface with a coefficient of Friction of 0.5. how much is the force of friction?
49n
Ethan is dragging a bag of grass from the garage to the street on the evening before garbage pick-up day. The diagram at the right is a free-body diagram. It uses arrows to represent the forces acting upon the bag. Each force is labeled according to type. The magnitude of the force is represented by the size of the arrow. Use the free body diagram to determine the net force acting upon the bag. The values of the individual forces are:
Fgrav = Fnorm = 60.5 N
Fapp = 40.2 N
Ffrict = 5.7 N.
34.5 N
(3kg)---> 3N
3,1
A Force that opposes motion between 2 surfaces.
how do you find weight
weight = m(g)
a 1000kg car goes from 2 m/s to 4m/s in 2 sec. what force acts on the car ?
f=ma
f = 1000n
a= 1m/s2
Moments after making the dreaded decision to jump out the door of the airplane, Darin's 82.5-kg body experiences 118 N of air resistance. Determine Darin's acceleration at this instant in time. HINT: begin by drawing a free body diagram and determine the net force.
8.37 m/s/s
(3kg)---------> 9N
9,3
Whats a Free-Body Diagram?
A drawing of a part of a complete system, isolated in order to determine the forces acting on the rigid body?
Friction equation?
F=uN
what is terminal velocity
the maximum speed of a falling object
Alejandra is attempting to drag her 32.6-kg Golden Retriever across the wooden floor by applying a horizontal force. What force must she apply to move the dog with a constant speed of 0.95 m/s? The coefficient of friction between the dog and the floor is 0.72.
230 N
<---3N (3kg) ------> 6N
3,1
What is Net Force?
The sum of all forces acting on the object.
What is the Buoyant force formula?
Buoyant force=pgv
what is a free-body diagrams
of a part of a complete system, isolated in order to determine the forces action on the rigid body
Dexter Eius is running through the cafeteria when he slips on some mashed potatoes and falls to the floor. (Let that be a lesson for Dexter.) Dexter lands in a puddle of milk and skids to a stop with an acceleration of -4.8 m/s/s. Dexter weighs 780 Newtons. Determine the coefficient of friction between Dexter and the milky floor.
0.49
(2kg)------>6N
6,3