Newton's Laws Flashcards
What is Force?
push or pull one object with mass to change its velocity.
What is a Net Force?
The combining of forces when two or more forces act on an object. Like when 2 people are pushing on a block.
What is a Balanced Force?
forces that are equal in size and opposite direction
What is an Unbalanced Force?
forces that are not equal in size and go in the same direction
What is Newton’s 1st law?
an object will move at a constant velocity until a net force acts on it. Like it will keep moving till something stops it.
What is another name for Newton’s 1st law?
Law of inertia
What is Inertia?
the tendency of an object to resist a change in motion
The more mass something has the more inertia
The greater the ____ pushing the tow objects together, the greater the ____
1- FORCE
2- FRICTION
what are the 3 types of friction?
Static Friction
Sliding friction
rolling friction
Resistance an object feels when flying in the air
Air resistance
What is air resistance determined by?
Speed
- greater the sped greater resistance
Size
- the larger the object the greater the resistance
Shape
- the flatter the object the greater the resistance
An invisible force that pull 2 two objects together
Gravity
Law of Universal Gravitation
any 2 masses exert an attractive force on each other
How fast does gravity make all falling objects go
9.8m/s
What is terminal velocity?
maximum velocity a falling object will reach
occurs when the force of gravity and air resistance become balanced
The more force you give the greater the acceleration
Newton’s 2nd Law
what is force formula
F=ma
You are pushing a friend on a sled, you push with a force of 40N. Your friend and the sled together have the mass of 80kg. Ignoring friction what is the acceleration of your friend on the sled?
a= .5m/s2
How do you find the weight of something that is in kg?
KG x 9.8 = ___
What is Newton’s 3rd law of motion?
every action has a equal and opposite reaction
p=mv
formula for momentum
What is the momentum of a car with a mass of 1300kg traveling at a speed of 28m/s
36,400
18- D
20- D
25-A
30- B
31- V=IxR
32-A
33- A
34-C
35-B
39- Control group- Litter B
47- correct
48- Newtons 1st law
53- joules
54- Joules
58 stores chemical energy and converts it to electrical energy.
60- add up ohms, I=V/R
69-129Hz
54- joules
58-stores chemical energy and converts it to electrical energy.
60- add all ohms, divide the V by the added-up ohms
69- 129HZ
