Includes all information for test on April 23rd EXCEPT DRAWINGS.
Speed with direction
Product of an object's mass and its velocity.
Net force on object equals zero.
Net force does NOT equal zero.
Force of 2 objects, in contact, that oppose movement of the other.
Force of attraction between 2 objects.
Tendency of an object to remain at rest or in motion at a constant velocity.
Motion of body when gravity is acting on it.
Maximum velocity reached by a falling object that occurs when the resistance of the medium is equal to the force due to gravity.
A person walks 1000 meters in 15 minutes. What is the person's speed?
Speed = Distance/Time 1000/15= 66.67m/s
What is the SI unit for Length?
What is the SI unit for Mass?
What is the SI unit for Volume?
What is the SI unit for Temperature?
What is the SI unit for Time?
EXPRESS THE NUMER IN SCIENTIFIC NOTATION!
20100 m .0000014 g
2.01 × 10 ⁴ m 1.4 × 10 ⁺⁶ g
CONVERT THE FOLLOWING UNITS FROM GRAMS to the given UNIT.
5.63 g into µg 10 g into kg
5630000. µg .010 kg
Determine the number of sig figs in the following numbers
1. 1025028 2. .0002 3. 1000. 4. 1000 5. 1.02000
1. 7 2. 1 3. 4 4. 1 5. 6
I have counted and there are 25 people in a class. (Focus on the number 25 in this sentence.) How many sig figs are there?
What does Fa stand for?
What does Fg stand for?
Force due to Gravity
What does Ff stand for?
Force due to Friction
What does FN stand for?
What does FNET stand for?
Review the elevator question. You must be able to label why something is positive (applied force) and something is negative (Opposite direction of the applied force).
FNET= -960 N (The force is negative because it is in the opposite direction of the motion of the system. Think about this. The elevator is going up. The opposite of up is down. That is the same as 215 pounds!)
Explain what is wrong with the following sentence: A man walked at a velocity of 12 m/s.
There is no direction.
A girl participating in cross-country spends the afternoon practicing, and ends the practice completely tired from her hard work, despite the fact that her average velocity during the practice was 0.0 m/s. Explain how this situation is possible.
She ran back to where she started, so technically there was no displacement.