1st Law
An object at rest will stay at rest unless acted upon by an
Unbalanced force
Force is equal to ....
mass x acceleration
For every action, there is an equal but
Opposite reaction
The amount of force needed to keep a 30kg object in motion.
0N
A push or pull that is caused by an object accelerating
Force
An object's inertia is completely dependent on this variable.
Mass
The situation when Newton's 2nd Law does not apply
When the forces are balanced on an object
When a person hits a door with 100N of force, the the door exerts this amount of force.
-100N (equal but opposite)
What is the weight of an 11kg object?
108N
The unit for force
Considering inertia, if you were in a fast elevator that stops suddenly, you would this.
Tingling in your toes, or your blood rushing to your toes.
The weight of an object (in Newtons) that has a mass of 10kg.
98N (10kg * 9.8 m/s2)
An ant and a train collide, the train will experience the ______ amount of force than the ant.
Same
How much less does an object weigh if the acceleration due to gravity was a fourth as much?
1/4
The resistance for an object to change its motion
Inertia
Considering a vacuum, this is what you need to keep an object moving.
Nothing (there is no unbalanced force)
When you double the force applied on an object, the acceleration will be
Doubled
An ant and a train collide, the train will experience the ________ amount of acceleration than the ant.
Less
What is the acceleration due to gravity of a 50kg object if it weighs 1150N
23 m/s2
The physical quantity that describes the amount of matter an object has
Mass
Describes how Newton's First Law applies to getting ketchup (that is stuck) out of the bottle.
By turning the bottle upside down and accelerating the bottle downward before stopping it causes the ketchup the stay in motion after the bottle stopped moving.
When you triple the force, the acceleration will changed in which way?
Reduced by a third (1/3)
Explain how Newton's 3rd Law applied to the water rocket project.
As the water was pushed out of the bottle, the bottle pushed on the water upwards.
Two kayakers are having fun in lake. Person in kayak 1 pushes kayak 2 with a force of 250N. If the mass of kayak 1 is 100kg, and the mass of kayak 2 is 200kg, find the acceleration the push gives to each kayak.
1 - 2.5 m/s2
2 - 1.25 m/s2
This describes the force of gravity on an object
Weight