IPC: Final Exam Review-Physics
questions well answered passed
Describe the speed, velocity, and momentum of an object at rest - correct answer ✔✔Zero
On a velocity-time graph how is acceleration and deceleration indicated? - correct answer
✔✔Acceleration (Positive slope)
Deceleration (Negative Slope)
If the net force acting on an object is zero, how will the object behave? - correct answer ✔✔It
will remain at rest
What is the result of unbalanced forces? - correct answer ✔✔Tug-of-war: one team pulls the
other team across the line
Define friction - correct answer ✔✔force that opposes motion between two surfaces that are
touching
How do you calculate work? - correct answer ✔✔W=Fd
Work = (force)(distance)
How much work is done when an object weighing 50N falls a distance of 30m to the ground?
DO THE WORK!! - correct answer ✔✔W=Fd = (50)(30) = 1500 J or 1500 Nm
, If a weightlifter pressed a 500 N weight 2m above the floor for 2 seconds, how much power did
he use?
DO THE WORK!!! - correct answer ✔✔P = wd/t (500x2)/(2) = 500 w
Power = (weight)(distance)/(time)
How does an inclined plane change the amount of work done on an object? - correct answer
✔✔it changes magnitude and direction of force
What is kinetic energy of 15 kg rock rolling down a hill at 2 m/s
DO THE WORK!! - correct answer ✔✔KE = (1/2)MV^2 = (1/2)(15)(2)^2 = 30 J
Kinetic Energy = (1/2)(mass)(velocity squared)
What is the primary source of the suns energy? - correct answer ✔✔Nuclear Fusion
Explain temperature - correct answer ✔✔-Associated with hot/cold
-Proportional to average kinetic energy of molecules
-Measured with thermometers
What are the freezing points and boiling points of water on the fahrenheit scale? celsius scale? -
correct answer ✔✔Fahrenheit = 32 freezing and 212 boiling
Celsius = 0 freezing and 100 boiling
questions well answered passed
Describe the speed, velocity, and momentum of an object at rest - correct answer ✔✔Zero
On a velocity-time graph how is acceleration and deceleration indicated? - correct answer
✔✔Acceleration (Positive slope)
Deceleration (Negative Slope)
If the net force acting on an object is zero, how will the object behave? - correct answer ✔✔It
will remain at rest
What is the result of unbalanced forces? - correct answer ✔✔Tug-of-war: one team pulls the
other team across the line
Define friction - correct answer ✔✔force that opposes motion between two surfaces that are
touching
How do you calculate work? - correct answer ✔✔W=Fd
Work = (force)(distance)
How much work is done when an object weighing 50N falls a distance of 30m to the ground?
DO THE WORK!! - correct answer ✔✔W=Fd = (50)(30) = 1500 J or 1500 Nm
, If a weightlifter pressed a 500 N weight 2m above the floor for 2 seconds, how much power did
he use?
DO THE WORK!!! - correct answer ✔✔P = wd/t (500x2)/(2) = 500 w
Power = (weight)(distance)/(time)
How does an inclined plane change the amount of work done on an object? - correct answer
✔✔it changes magnitude and direction of force
What is kinetic energy of 15 kg rock rolling down a hill at 2 m/s
DO THE WORK!! - correct answer ✔✔KE = (1/2)MV^2 = (1/2)(15)(2)^2 = 30 J
Kinetic Energy = (1/2)(mass)(velocity squared)
What is the primary source of the suns energy? - correct answer ✔✔Nuclear Fusion
Explain temperature - correct answer ✔✔-Associated with hot/cold
-Proportional to average kinetic energy of molecules
-Measured with thermometers
What are the freezing points and boiling points of water on the fahrenheit scale? celsius scale? -
correct answer ✔✔Fahrenheit = 32 freezing and 212 boiling
Celsius = 0 freezing and 100 boiling
