Newton's Laws Study Guide Flashcards
(31 cards)
Define and give examples of Newton’s Frist, Second, and Third Laws of Motion
- an object will not change its motion unless a force acts on it.
- the force on an object is equal to its mass times its acceleration. (F=ma).
3.when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
Describe and give an example of inertia
Inertia is the tendency of an object to resist changes in its state of motion.
EX: if you roll a ball, it will continue rolling unless friction or something else stops it by force
Describe what friction is and what friction does
Friction is the force that resists the movement of two surfaces that are rubbing together
List four types of friction, and give examples of each type of friction
static friction (a book resting on a table), sliding friction (a sled sliding across ice), rolling friction (a wheel rolling on the ground), and fluid friction (a fish swimming through water).
What are newtons used to describe
A newton is a unit of measurement for force.
Describe how forces can be balanced with an object and what it would look like
If the forces on an object are equal, they are said to be balanced, and there is no motion. EX: <—-10n [ ] 10N—- >
[ ]
Describe how forces can be unbalanced with an object and what it would look like
If they are not equal, than the forces are unbalance and objects move.
EX: [ ] 20N—-> <——-10N[ ]8N—–>
Define what the term “force” means and explain how to calculate net force
Force is a push or a pull. Net force is the sum of all forces acting on an object. F = ma
Describe how an object will move when a force is applied to the object
An object will move in the same direction that the initial force is moving
Describe the resultant would be for the following situations —->4N [ ]<—–8N —–>3N [ ] <—– 2N
- 4N<—- 2. 5N—>
Describe what the term “magnitude” means
Magnitude- the value of something
Vector-direction+magnitude.
Define what acceleration is and give an example of an acceleration.
Acceleration is produced when a force acts on a mass.
EX: A change in velocity, speed, or direction.
Describe what mass measures, what weight measures, and what the difference is between the two
Mass measures the amount of matter in an object. weight measures the force of gravity acting on that object
Weight will change depending on how close you are located to a strong gravitational force, but mass will stay the same.
Explain what gravity is and the two ways that gravity can either increase or decrease
A force that all objects have as long as the objects have mass. More mass= more gravity.
Given the labels that are associated with measuring force.
Newtons (N)
Kg m/s^2
What is the rate of acceleration for a falling object on Earth
9.8 m/s^2
Give an example of an accelerator inside a car.
Steering wheel
Brake
Accelerator(gas pedal)
Explain what speed is and how to calculate speed
Speed is how far something will travel in a given amount of time. ( the direction the object is traveling is not important)
Speed = distance ➗ Time
Describe what happens to objects that are different masses when they are dropped from the same height
They will hit the ground at the same time because all objects fall to earth at the same rate.
Describe how your mass and weight would change or not change if you went to the moon
Mass will stay the same because you are not changing the amount of matter in your body.
Weight would decrease because there is less gravity.
Describe what force pairs are and how they behave when they interact
Action-reaction, pairs are forces of equal magnitude and opposite direction that act on different object
What does motion look like and how would you describe what motion is
Motion is movement or a change in location. It looks like an object that is changing locations (moving).
Explain how to calculate the acceleration of an object.
a=f net/m = 5 N/ 10 kg=0.5 m/s^2
What forces act on a vase sitting on a table?
Gravity and the table
