An object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an unbalanced force.
100
What is the unit for work?
Joules
100
What is the energy of motion called?
Kinetic Energy
100
What does the "q" represent in Coulomb's law?
The charge of the object
200
What is described as a push or pull?
A force
200
What is the slope of a Distance/Time graph represent?
Speed
200
What must happen for an object to "do work"?
A force must be applied over a distance...object must move.
200
What is the energy of position called?
Gravitational Potential energy
200
What is the movement of electrons called?
Electricity
300
What happens when balanced forces act on an object?
The object will not accelerate (change what it is doing...either moving at a constant velocity or remaining still)
300
What is the displacement of a ball that rolls 4m south then 3m east?
5 meters SE
300
What is the momentum of a 85kg sled gliding down a slope at a velocity of 8m/s?
Mass x Velocity
85 x 8 = 680kg*m/s
300
What does the sum of potential and kinetic energy equal?
The total mechanical energy of an object.
300
What 3 factors affect an object' "thermal energy"?
mass,temperature and phase (movement of particles)
400
What is the "net force" of an object when two balanced forces act upon that object?
Net Force = Zero
400
What is the type of motion that occurs when an object receives an initial push and then gravity pulls it to the ground?
Projectile motion
400
One Horsepower is equal to how many watts?
One horsepower = 746 Watts
400
What is the kinetic energy of a batter that swings a bat with a mas of 4.2kg at a velocity of 92m/s?
17,774.4 joules
400
How much heat is absorbed by a 525g stainless steal troph when its temperature rises from 42 degrees C to 89 degrees C during the day. (Specific heat of stainless steal = 1.245 K/g*C)
30,720.38 Joules
500
What are all the forces acting upon a piece of paper that is dropped from the roof of the school?
Gravity and air resistance
500
What is the acceleration of a car that increased its speed from 25mph to 85mph in 8 seconds?
7.5 m/s^2
500
What is the final velocity of a collision between a 2500kg Dodge truck traveling at a speed of 65m/s and a 3200kg U-haul truck parked on the side of a road if they stuck together after the collision?
47.10m/s
500
What is the GPE of a 1.5kg flower pot sitting on a window sill that is 15meters above the ground?
220.5 joules
500
What is the force between charges of 0.025 C and 0.013 C, if they are both a distance of 0.069m apart?
61,436,672.97 N