1st semester final review

List three examples each of things that are commonly measured by mass, volume, and length.

What are base units?
Give 3 examples of base units:

What are derived units?
Give 5 examples of derived units and what are each derived from?

Which units are each of the following measured in typically?:

What units must the mass be measured in to calculate force?

What units must the acceleration be measured in to calculate force?

What units must the distance be measured in to calculate work?

What units must the time be measured in to calculate power?

Scientific method

Which of the following is example of a hypothesis?

How do you use a hypothesis?

Give examples of:
-how science depends on technology
-how technology depends on science

experimental (i.e., independent) variable -
dependent variable -
control variables -

Why do you only test one variable at a time?

Motion, Force, and Acceleration

What is the velocity of a bullet that travels 400 meters in 7 seconds?

If a car is traveling at 70km/hr, how far will it travel in half an hour?

Which has more momentum: A 5 kg soccer ball moving at 100 m/s or a 20 kg cannon ball moving at 30 m/s?

If a skier increases speed from 2.0 m/s to 4.5 m/s in 5 seconds, what is her acceleration?

Describe what is happening to the car whose movement is described in the following graphs:

Give an example of unbalanced (or balanced) forces.

State Newton’s Laws of motion (there are three) and give an example of each:

What is the net force necessary to accelerate a 10 kg bicycle forward at 2.0 m/s2? (Show your work!)

A flower pot falls from a ledge at 9.8 m/s2.  If it hits the ground with 10.0 N of force, how much mass was in the flower pot? (Show your work!)

Give an example of how an object’s weight could change? (Note: This is not a biology question.)

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