PHY 150 Updated Questions with Correct Answers.
What two classes of motion did Aristotle advocate?
Natural motion and violent motion
What did Copernicus say about the motion of the Sun?
The Sun is stationary and Earth circles it.
What did Galileo demonstrate in his Leaning Tower of Pisa experiment?
He demonstrated that light and heavy objects gain the same amount of speed when falling.
What was the greatest discovery by Galileo during his inclined-plane experiments?
He discovered that a ball rolling down an incline and onto a horizontal surface would roll
indefinitely.
Newton said that something was needed to change the motion of an object. A clear reading
of his first law tells us that what is needed is ______.
a non-zero net force
What is the net force when a pair of 5-N forces simultaneously act in the same direction on
an object?
10 N
Which of Newton's laws does the equilibrium rule illustrate?
Newton's First Law
How much support force acts on a 200-N girl standing on a weighing scale?
, 200 N
What is the net force on a crate sliding at an unchanging speed when pushed with a steady
force of 75 N?
Zero
If while riding in a smooth-riding train, you toss a coin upward, the coin will normally land
______.
in your hand
Copernicus theory of the solar system stated that _____.
Earth and the rest of the planets orbit around the Sun
Galileo's experiments showed that Aristotle's ideas about __________ were wrong.
types of motion
If the car you are riding comes to a sudden stop, your body moves forward. What is the
cause of this motion?
There is no force, your body just continues its motion.
To obtain the resultant from two vectors we have to _____.
consider their respective directions and determine whether to add (same direction), subtract
(opposite direction), or use the parallelogram method (if at an angle).
An object is in mechanical equilibrium if _____.
What two classes of motion did Aristotle advocate?
Natural motion and violent motion
What did Copernicus say about the motion of the Sun?
The Sun is stationary and Earth circles it.
What did Galileo demonstrate in his Leaning Tower of Pisa experiment?
He demonstrated that light and heavy objects gain the same amount of speed when falling.
What was the greatest discovery by Galileo during his inclined-plane experiments?
He discovered that a ball rolling down an incline and onto a horizontal surface would roll
indefinitely.
Newton said that something was needed to change the motion of an object. A clear reading
of his first law tells us that what is needed is ______.
a non-zero net force
What is the net force when a pair of 5-N forces simultaneously act in the same direction on
an object?
10 N
Which of Newton's laws does the equilibrium rule illustrate?
Newton's First Law
How much support force acts on a 200-N girl standing on a weighing scale?
, 200 N
What is the net force on a crate sliding at an unchanging speed when pushed with a steady
force of 75 N?
Zero
If while riding in a smooth-riding train, you toss a coin upward, the coin will normally land
______.
in your hand
Copernicus theory of the solar system stated that _____.
Earth and the rest of the planets orbit around the Sun
Galileo's experiments showed that Aristotle's ideas about __________ were wrong.
types of motion
If the car you are riding comes to a sudden stop, your body moves forward. What is the
cause of this motion?
There is no force, your body just continues its motion.
To obtain the resultant from two vectors we have to _____.
consider their respective directions and determine whether to add (same direction), subtract
(opposite direction), or use the parallelogram method (if at an angle).
An object is in mechanical equilibrium if _____.
