Describing Motion
The speed at a specific moment of the object’s motion
What is INSTANTANEOUS SPEED?
a way to measure the pull of gravity on an object that has mass?
What is weight?
the upward force on an object in a fluid
what is the BUOYANT FORCE?
energy that is stored and currently not in use
What is POTENTIAL ENERGY?
CALCULATE the speed:
A car travels 100 miles in 2 hours
What is 50 miles/hour?
The rate that speed is changing. It can be positive when the speed is increasing or negative when speed is going slower. It also changes with direction
What is acceleration?
the tendency of an object to keep doing what it was doing and not change.
What is INERTIA? aka Netwon's first law
Buoyant force is equal to the weight [or volume] of the fluid it displaces
Who's principle?
Who is ARCHIMEDES?
Name 3 FORMS of energy
What is...
Light, Thermal, Sound, Electrical, Mechanical, Nuclear
CALCULATE the acceleration:
A car accelerates from 5m/s to a final velocity of 20 m/s in 5 seconds. What is its acceleration?
What is 3 m/s SQUARED?
Name 3 different units that can be used to measure speed
What are:
m/s
cm/min
km/h
the acceleration of an object depends on its mass and the forces on it. Greater force means more acceleration. Larger mass means slower acceleration.
Which of Newtons Laws is this?
What is the 2ND LAW?
when pressure is put on a fluid in a closed container, the pressure is distributed equally throughout the fluid.
Who's principle?
Who is PASCAL?
Resources that are gone after we get the energy from them, or it takes many, many years for them to be replenished.
What are NONRENEWABLE RESOURCES?
A 10 kg bowling ball is pushed with a force that causes it to accelerate at 2 m/s². What is the force applied to the ball?
F=MA
F= 20 Newtons
Acceleration is always..._____
What is SQUARED?
A dog jumps off of a float in the pool. When she jumps, the raft goes backwards.
Which of Newton's laws explains this?
What is Newton's Third Law?
the amount of force in a certain area, measured in Pascals
What is PRESSURE?
energy that is stored in the bonds of food and fuel
What is CHEMICAL POTENTIAL ENERGY?
If a force of 10 Newtons (N) is applied to an object with a mass of 2 kilograms (kg), the acceleration would be:
What is 5 m/s²
a = 10 N / 2 kg = 5 m/s² (meters per second squared)
A girl jumps up on a trampoline 5m and falls down 5m, landing in the same exact spot. What is her DISPLACEMENT?
the force that slows down objects as they move through liquids and gases.
What is FLUID FRICTION?
A roof can come off a house in high wind because the fast wind over the roof causes low pressure.
Who's principle?
Who is BERNOULLI?
What is NONRENEWABLE?
You need to get to class, 200 meters away, and you can only walk in the hallways at about 1.5 m/s. (if you run any faster, you’ll be caught for running). How much time will it take to get to your class?
What is 133 seconds?