Unit Three Flashcards
What is the formula for speed
S=d/t
On a distance time graph what is the X and y axis and what would the slope tell you
Distance = y
Time= X
Slope tells you speed
What is the formula for distance
D = s X t
What is terminal velocity
When objects stop accelerating and fall at a constant speed
How is terminal velocity related to surface area and mass
No relation to mass
Larger surface area. Slower terminal velocity
What is the formula for acceleration
A= f/m A= s/t A= vf - vi ------ T
On a speed time graph what does the slope give you
Acceleration
What is inertia
Tendency of objects to keep doing what they are doing, resist change
What is meant by the term equilibrium and what can an object in equilibrium be doing
All forces are equal and constant speed or not moving
If an object has a net force other than zero what is happening
Accelerating or decelerating
Is a car moving around a circular track going at a constant speed
Yes
What is the relationship between force and acceleration
When force increases
Acceleration increases
What is Newton’s second law
F = m X a
What are the units for m, f, and a
M = kg F= n A= m/s/s
What is Newton’s third law
For every action there is an equal and opposite reaction
Explain how an interaction works when you push on a wall with a force of 5N
It pushes back with 5N
If the force of a bat against the ball is the action what is the reaction
Ball pushing on the bat
What experiences the greater force a bug or a windshield
Neither because the same force is exerted due to Newton’s third law
Why does the cannon not travel as far as the cannonball
Because the cannon has a lager mass
What is G gravity
Universal gravitation: gravitational attraction of all objects in the universe
6.67 X 10 -11
What happened to the force of attraction between two objects if the distance between them is cut in half
Force increased
What happens to the force of attraction between two objects if the mass of one object is doubled
Force decreased
What has more effect on the tides of the earth, the moon or sun
The moon
How do you calculate weight
10 m/s/s X kg
