Pretest

Question 1

Rosa uses the formula open paren v sub i cosine theta close paren times triangle times t to do a calculation. Which value is Rosa most likely trying to find?

Revolt · Accepted Answer

D: the horizontal displacement of a projectile launched at an angle

Question 2

Why is a baseball thrown by a pitcher considered to have projectile motion?

Revolt · Accepted Answer

C: It has horizontal and vertical motion.

Question 3

Lexy throws a dart with an initial velocity of 25 m/s at an angle of 60 degrees relative to the ground. What is the approximate vertical component of the initial velocity?

Revolt · Accepted Answer

A: 21 point 7 m/s

Question 4

Which formula can be used to calculate the horizontal displacement of a horizontally launched projectile?

Revolt · Accepted Answer

D: triangle x is equal to v sub x triangle t

Question 5

Which is an example of projectile motion?

Revolt · Accepted Answer

C: a person throwing a rock

Question 6

Barry is conducting an experiment and rolls a tennis ball down a ramp. Which best describes the motion of the tennis ball?

Revolt · Accepted Answer

A: It does not exhibit projectile motion and follows a straight path down the ramp.

Question 7

Which arrow best represents the path of an object with projectile motion?

Revolt · Accepted Answer

B: Image with description A curve arrow above 'C' emerging from the left and its arrow head on the right

Question 8

Question 8

Revolt · Accepted Answer

B: [Dropdown 1] parabolic

Question 9

Charlotte throws a paper airplane into the air, and it lands on the ground. Which best explains why this is an example of projectile motion?

Revolt · Accepted Answer

B: The paper airplane’s motion is due to horizontal inertia and the vertical pull of gravity.

Question 10

In the formula v sub y is equal to A sub y triangle t , what is the value of A sub y for an object in projectile motion?

Revolt · Accepted Answer

A: negative 9 point 8 m/s squared

Pretest Answers

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