Friction
What is non contact friction
gravity
If a leaf falls down with 3N and the ground resists, how much force will it resist with?
3N
What is newton´s first law
An object at rest will stay at rest unless acted on by another force
If a cow is riding on a surfboard the from where would the cow appear to be still
The surfboard
How does the mass of a object, once inertia is overcome, affect acceleration.
The heavier it is the more it will accelerate
What kind of friction is when things are rolling
Rolling friction
If a twig is being pulled with 10N one direction and 7N another, what is the total net force
3N
What is the equation for newtons second law
Net force = mass X acceleration
If a farmer is pulling a cage of rabid chickens on a flatbed truck going 5 mph on a bumpy road with a diameter of 5.678 feet, from where would the chickens cage appear to move.
The road
What is the difference between speed and velocity and acceleration.
Speed-how fast it is
Velocity-Speed and the direction
Acceleration-how fast speed increases
What kind of friction is when things rub together
Sliding Friction
If one plane pulls with left with a force of 300N and another pulls right with a force of 200N what is the net force
100N left
Who made newtons laws
Issac Newton
If a car falls of a cliff and you were inside, would it be moving to you or not(if the car fell straight down)
Not moving
Name Newtons equation of net force to get acceleration.
Net force=Mass X Acceleration
What kind of friction is caused when a 500kg nuclear bomb is dropped from a B-2 Spirit stealth bomber
Fluid friction
What is the Net force of 1983N and 643N
1340N
A hokey player hits a hokey puck, which laws are these
1 and 3
There is a guy sliding Northeast across a frozen lake at 55mph. A polar bear is chasing him at 66mph. What direction is the person seeming to slide according to the polar bear
Southwest
Name newtons equation for Acceleration
Net Force
Acceleration=------------------
Mass
If a skateboarder is riding on his board, jumps,and his board falls and lands upside down, what are the types of friction, in order.
Rolling,Fluid,Sliding
If leopard is pulling on a dead antelope left with a force of 67.9N and a cheetah is pulling with a force 42.5N right, what is the net force and in what direction.
19.6N
What are newtons laws.
1.Every object will stay still unless a force is on it
2.A formula that describes acceleration
3.For every action there is a equal and opposite reaction
If a shark is on a swinging pendulum with a platform underneath mirroring the movement, were will the shark seem to move from.
The platform, the shark will still go up and down
What is inertia
The amount of force it takes to get an object to start or stop moving