3
lesson pretestMultiple Choice

Pretest

Question 3 • Physics I

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?

Answer
A
21 point 7 m/s
B
0 point 8 7 m/s
C
0 point 5 m/s
D
12 point 5 m/s

Explanation

The vertical component is the initial speed multiplied by the sine of the angle above the ground: 25 × sin(60°). Since sin(60°) is about 0.866, the vertical component is about 21.7 m/s. Therefore, the correct choice is 21.7 m/s.

AI-written and checked against the verified answer.

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