Mechanical Equilibrium
Motion
Projectile Motion
Newton's Laws
Momentum
100
what is needed to change an object's state of motion
What is a force
100
average speed = ?
What is total distance/time
100
the resultant of two perpendicular vectors is ________
What is the diagonal of the parallelogram the vectors form
100
the force that acts between 2 objects that touch each other
What is friction
100
collision where a car crumples on impact
What is inelastic
200
what kind of equilibrium are resting objects
What is static equilibrium
200
acceleration is ?
What is change in speed/time interval
200
what geometric theorem is used to solve the addition of perpendicular vectors
What is Pythagorean theorem
200
what is the quantity of matter in an object and what SI units is this magnitude expressed
What is mass. Expressed in kg
200
why does a cannon recoil when fired
What is momentum is conserved, so the momentum the cannon is equal and opposite of the cannonball
300
stretching force associated with springs
What is tension
300
slows the motion of falling objects
What is air resistance
300
downward motion of a projectile is the same as _______
What is free fall
300
Newton's first law states, the more mass an object has the greater the object's _______________
What is inertia
300
which crash is more survivable and why? car hits tree car hits bridge abutment with 10 barrels of sand in front
What is bridge abutment with sand barrels because the sand decreases the momentum to zero over a longer period of time
400
for equilibrium to occur, the sum of all forces must equal
What is zero
400
another name for deceleration
What is negative acceleration
400
when bowling, is the bowling ball a projectile and why or why not.
What is no, it has no vertical motion only horizontal motion.
400
discounting air resistance, what ratio proves that a large stone and a small stone hit the Earth at the same time when dropped from the same height
What is F/m
400
which boxing gloves hit harder & why 6 oz gloves 16 oz gloves
What is 6 oz gloves because more padding allows momentum to be reduced to zero over a longer time.
500
upward force that balances a weight on a surface
What is support or normal force
500
instantaneous speed = ? x time
What is "g" or approx. 10
500
What is an projectile called when it continually 'falls' around the Earth?
What is a satellite.
500
what is the action force and reaction force of a rocket moving thru space.
What is rocket pushes gas molecules and gas molecules push the rocket
500
what happens when 10 astronauts in a circle in space throw balls at each other
What is the circle widens
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