A push or a pull
What is Force
An object has a gravitation pull of 45N and an up thrust of 5N. Which direction will it move, Up towards the sky or down to the Earth?
Down to the Earth - pull is stronger than up thrust.
this is the distance moved of an object over time or x=d/t
speed
the larger the mass the ______ the force needed to move it
larger
An unbalanced force of 60N is pushing an object. will the object move towards you or away?
away
Newton's First Law
Inertia - an object at rest will remain at rest or an object in motion will remain in motion until acted on by an outside force
Two kids are on a swing. Each is pushed with 5N of force. One kid has a mass of 35kg and the other has a mass of 50kg. Which kid will move slower?
50Kg will accelerate slower
this equals mass times acceleration x=MA
Force = MA or F=MA
magnets with the same poles will do what?
repel
your team is pulling with 100N and the other team tugs with 90N. Will your team win or lose?
win
Newton's 2nd Law
F=MA
you roll a marble at 5 m/s. One surface is a tile floor and the other is carpet. On which surface will the marble roll farther?
tile
the particles that make things up
matter
What is force?
a push or pull
Car A is moving at 40 MPH hits car B moving at 40 MPH. Will the cars move towards A, B, or neither?
neither
Newton's 3rd Law
For every action there is an equal but opposite reaction
You are pushing a book case full of books with 45N of force. Half way you unload the books and continue pushing with the same force. What will happen to the bookcase when you push it the second time?
it will accelerate faster
this produces heat when two objects slide past each other
Friction
when force is balanced an object will _______
not move
you throw a tennis ball at the wall at 45 mph. What will happen when it hits the wall? Will it fall straight down, bounce off with equal force, or stick to the wall?
bounce off with equal force
Gravity and up thrust
this is speed with direction
velocity
this increases when direction is changed even if speed does not
acceleration
this equals a change in velocity over time
acceleration
you jump out of an airplane with a parachute and fall towards the ground. What force keeps you from splattering on the ground?
up thrust