Speed, Velocity, Acceleration
Name two possible units for velocity
m/s, mi/hr, km/hr, anything that has units of length over units of time
if an object is fired straight up at 20 m/s, how long will it take to come back down?
4 s
answer a and b
b , d
what is the weight of a 100 kg man?
1000 N
The Boston based robotics company that has created the Atlas Robot
What is Boston Dynamics
acceleration can be described as
the change in velocity over time
At what point in the path of a projectile is the object's vertical velocity at its lowest?
the highest point
answer c and d
c, b-d,
If the net force on an object doubles, its acceleration will _________________. If the mass of the same object doubles its acceleration will ___________________
double, cut in half
What is E = mc^2?
when an object is in free fall, there is no ___________________ and it will fall with a constant ______________________
air resistance, acceleration
if a projectile is launched at an angle of 60 degrees above the horizontal and a speed of 45 m/s, about what speed will the ball hit the ground with
45 m/s
answer e and f
a-c, c-e
what is the mass of a car that accelerates at 2 m/s2 when a net force of 15,000 N is applied to it?
7500 kg
This theory attempts to model of subatomic particles as tiny one-dimensional entities rather than the more conventional approach in which they are modeled as zero-dimensional point particles
What is string theory?
if an object is moving at a constant speed, its acceleration is
0 m/s2
A water balloon is launched horizontally off of the roof of a building. How far will the water balloon have gone vertically after 2.5 s?
31.25 m
answer g and h
a-b and d-e, b-d
If there is no air resistance, why do all objects fall at the same rate? answer in terms of mass and weight
the object with the larger weight also has the larger mass so the acceleration stays constant
This theory states that moving clocks can 'tick' more slowly than those that are stationary
What is special relativity?
Mr. Moccia is driving on Brooks campus at 16 mi/hr. He slams on the brakes and accelerates in the opposite direction at 4.3 m/s2. How long will it take him to stop?
What distance will his car travel during this time?
1.65 s, 5.86m
A athlete has a total jumping time of 3 seconds. How high must the athlete be able to jump?
11.25 m
answer i and j
a-b and c-d, b-c and d-e
A bug smashes on your windshield. the windshield experiences _______________ force and _______________ acceleration than the bug
the same, less
This famous Quantum Theory thought experiment has a cat that is both alive and dead until you open the box
What is Shrodinger's cat?