This the rate at which work is done.
What is Power.
F = 600N
d = 5m
W = _____
W = 3,000 J
(No unit, no points)
A person tries to move their 100 kg desk 5 meters across their room, but it is to heavy and does not move. How much work is done?
What is none.
What type(s) of friction are present when a soccer ball gets kicked and moves along the ground?
What are rolling friction and fluid friction.
This is the unit that power is measured in.
What are Watts
W = 60J
t = 3,600s
P = _________
P = 0.0167W or 0.017W
(No unit, no points)
A mother is carrying her baby and walking from room to room. How much work is the mother doing?
What is none.
True or False: kinetic energy and force are the same thing.
What is FALSE.
No work is done without _______________ .
What is motion.
To calculate Power, we use this formula:
What is Work / time or P = W/t
t = 6s
W = 540N
P = __________
P = 90W
(No unit, no points)
Which has more Power:
Engine 1 can do 600J of work in 2 seconds
Engine 2 can do 300J of work in 45 seconds?
What is Engine 1.
What is "also increases" or "goes up" or "gets stronger"
Force and motion must be applied in the __________________ for work to be done.
What is the same direction.
When you increase the amount of work done, but decrease the amount of time, the amount of Power used will ___________ .
What is increase.
m = 20kg a = 1.5 m/s2
d = 40 m
W = _______
W = 1,200J
(No unit, no points)
When someone is lifting weights, are they doing work (according to the physics definition)?
What is "Yes (as long as the weights are moving in the same direction as the force they apply)."
What units do we use for acceleration?
What are m/s2 or km/hr2
The unit for Work is Joules (J). A Joule is the same thing as which other TWO units (Hint: W = Force x distance)
What are Newton x meters.
Doing less work in more time means that they Power you used ________________ .
What is decreased / was smaller.
m = 2kg a = 3m/s2
d = 5m t = 60s
P = _______
P = 0.5 W
(No unit, no points)
When you drop the cart from the top of the ramp, are you doing work on the cart?
What is no, because I am not applying a force (gravity is pulling the cart down).
What does it mean in physics for an object to be "in motion"...no lame answers please
What is "it's distance/position from a reference point is changing"