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What is Newton's first law of motion?
An object in motion tends to stay in motion unless acted upon by an outside force. An object at rest tends to stay at rest unless acted upon by an outside force.
What is the net force of a 20 Newtons west, and 20 Newtons east?
Since the forces are in opposite directions, they subtract. Meaning 20 - 20 = 0 Newtons.
What is the net force of 10 Newton's west, and 15 Newtons west?
Since the forces are in the same direction they add. Meaning that 10 + 15 Newtons = 25 Newtons west.
If an object is not changing velocity (the net force is 0) what kind of force is being applied?
What is the name of the effect that says faster moving fluids exert less pressure in an area?
The Bernoulli effect
What is the velocity of an object that falls 50 meters in 5 seconds?
Distance/time—or 50/5 --- 10 meters/second.
What is the frequency of an object that swings for 10 cycles in 2 seconds?
Frequency = cycle/sec. or 10/2 = 5 (Hertz is the unit)
In the rocket lab, a balloon pushed a rocket forward by releasing air in the other direction. Which of Newton's laws does this describe?
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