Force
Force
Force
Force
Force
100
What is friction?
A force that opposes motion
100
What is gravity?
force of attraction that exists between two objects
100
What is Hooks Law?
The deformation of a spring will be directly proportional to the force exerted on it. Force= k(elastic constant) * x (elongation)
100
What is acceleration?
The measurment of how quickly the speed changes
100
What is newton?
The unit for force- The measurment of forcein the Metric System
200
Define force
a push or a pull
200
What are 2 factors that determine the amount of gravitational attraction
The mass of each object and the distance between them
200
Weight is a measure of what?
The gravitational attraction (weight is constant on earth)
200
How is mass different from weight
Mass- amount of matter in an object, it is constant on earth, and new changes depending on location
200
What do you measure with a spring scale? With an electronic balance?
You measure weight with a spring scale mass with an electronic balance.
300
How can weight change?
Weight can change depending on where you are.
300
What is the metric unit of weight (force)? English system unit?
Metric- Newton (1kg= 9.8 newtons) english = pound
300
What is the rate of acceleration due to gravity?
9.8m/s squared
300
Balanced forces result in........... Unbalanced forces result in...........
No change in motion/result in a change in motion (start or stop)
300
Friction occurs whenever two surfaces are.........................
Rubbed against each other- in contact
400
Graph of speed versus time will be what shape?
straight line ( represents acceleration)
400
Graph of time versus mass will be what shape?
curved line
400
What is the gravity on Mars
3.71m/s^2
400
What is the gravity on Earth?
9.81 m/s^2
400
What is the difference between weight and mass?
Mass is the amount of matter in a body. Weight is a measure of the amount of force acting on a mass due to acceleration due to gravity.
500
What are the three main groups of fundamental forces?
Gravitational, electromagnetic, nuclear
500
What do forces produce?
Changes in somethings state of motion
500
What is the gravity on the moon?
1.62 m/s^2
500
What is tension?
The force exerted on an object that is hung or stretched.
500
Explain why the crumpled sheet of paper will hit the ground before the uncrumpled sheet of paper?
It has less exposed surface area and less air resistance
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