14. A rock from a volcanic eruption is launched straight up into the air with no appreciable air resistance. Which one of the following statements about this rock while it is in the air is correct? a. On the way down. Both its velocity and acceleration are downward, and at the highest point both its velocity and acceleration are zero. b. On the way up, its acceleration is downward and its velocity is upward, and at the highest point both its velocity and acceleration are zero. O c. The acceleration is downward at all points in the motion. d. Throughout the motion, the acceleration is downward, and the velocity is always in the same direction as the acceleration. e. The acceleration is downward at all points in the motion except it is zero at the highest point.

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O d. Cannot be determined without knowing the mass of both James and John
e. James and John will reach the surface of the lake at the same time.
14. A rock from a volcanic eruption is launched straight up into the air with no
appreciable air resistance. Which one of the following statements about this rock
while it is in the air is correct? *
a. On the way down. Both its velocity and acceleration are downward, and at the
highest point both its velocity and acceleration are zero.
b. On the way up, its acceleration is downward and its velocity is upward, and at the
highest point both its velocity and acceleration are zero.
O c. The acceleration is downward at all points in the motion.
d. Throughout the motion, the acceleration is downward, and the velocity is always in
the same direction as the acceleration.
e. The acceleration is downward at all points in the motion except it is zero at the
highest point.
15. A ball is thrown at an original speed of 8.0 m/s at an angle of 35° above the
ben it
hp
C
Transcribed Image Text:O d. Cannot be determined without knowing the mass of both James and John e. James and John will reach the surface of the lake at the same time. 14. A rock from a volcanic eruption is launched straight up into the air with no appreciable air resistance. Which one of the following statements about this rock while it is in the air is correct? * a. On the way down. Both its velocity and acceleration are downward, and at the highest point both its velocity and acceleration are zero. b. On the way up, its acceleration is downward and its velocity is upward, and at the highest point both its velocity and acceleration are zero. O c. The acceleration is downward at all points in the motion. d. Throughout the motion, the acceleration is downward, and the velocity is always in the same direction as the acceleration. e. The acceleration is downward at all points in the motion except it is zero at the highest point. 15. A ball is thrown at an original speed of 8.0 m/s at an angle of 35° above the ben it hp C
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