Show:
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's Third Law of Motion
Momentum
Gravity
100
Newton's 1st Law states: "An object at rest remains at rest and an object in motion maintains its velocity unless it experiences an ____________________".
What is unbalanced force?
100
Finish this statement: "The unbalanced force acting on an object equals the object's __________________________.
Mass time's it's acceleration.
100
Fill in the blanks: For every action force, there is an____________ and ______________ reaction force.
Equal & Opposite
100
Fill in the blank: Mass times velocity equals______________.
Momentum
100
When objects are moved further apart from each other, the force of gravity: a. increases; b. stays the same; c. decreases; d. decreases at first and then increases.
C. Decreases
200
This is the tendency of an object at rest to remain at rest or, if moving, to continue moving at a constant velocity.
What is Inertia?
200
This unit is used to measure acceleration in free fall.
What is m/s2
200
Which object does not have momentum? a. a fish swimming in a pond; b. a feather falling to the ground; c. a rock by the side of the road; d. a boulder rolling down a hill
c. a rock by the side of the road
200
Which of the following is not a factor in calculating momentum? a. mass; b. direction; c. acceleration; d. speed;
C. Acceleration
200
Of the following, the greatest gravitational force would occur between: a. a marble and a baseball 5 meters apart; b. a loaded freighter on the high seas and Earth; c. the moon and an astronaut standing on the moon; d. the moon and the Earth
D. the moon and the Earth
300
What is the unbalanced force that slows down a ball rolling across the floor?
What is the force of Friction?
300
According to Newton's 2nd Law of Motion, Force is the product of ________________ and ________________.
Mass and Acceleration.
300
A 10.0 kg dog chasing a rabbit north at 6.0 m/s has a momentum of: a. 0.6 kg x m/s; b. 60.0 kg x m/s north; c. 60.0 m/s; d. 60.0 kg/s
b. 60.0 kg x m/s north
300
If two objects with different masses and traveling with different velocities collide, what law allows you to predict the motion of the objects after the collision? a. the law of conservation of momentum; b. the law of universal gravitation; c. Newton's third law; d. Newton's second law
a. the law of conservation of momentum
300
Fill in the blank: According to the Law of Universal Gravitation, the gravitational force between two objects decreases and ________________ increases.
Distance
400
What is the SI unit for Force? (Hint: Named for the scientist who described the relationship between motion and force)
What is Newton?
400
What tool is used to measure force in Newtons? (Hint: Newton's 2nd Law Lab)
Spring Scale.
400
Fill in the blank: Mass is the measure of the amount of ________________ in an object.
Matter
400
Fill in the blank: The total momentum of objects before a collision __________________ the total momentum of objects after a collision
Equals
400
Fill in the blank: A situation known as _________________ occurs when astronauts and their surroundings all accelerate at the same rate.
What is Free Fall?
500
Fill in the blank: An object with a small mass has ____________ inertia than an object with a larger mass.
Less
500
Weight is best described as: a. an object's resistance to acceleration; b. what causes an object to fall; c. the downward force exerted on an object due to gravity; d. the force solely dependent on an object's mass
c. the downward force exerted on an object due to gravity
500
Fill in the blanks: When a satellite orbits a planet, two motions combine to form the satellite's orbit, ______________ and ________________
Free Fall & Projectile Motion (or Forward Motion)
500
Fill in the blank: When two billiard balls collide, the total change in momentum of the balls is __________________.
Zero
500
When gravitational forces and air resistance equalize on an object that is falling toward Earth and the object stops accelerating, what is the velocity of an object called?
Terminal Velocity