E1t9 Retake Preap 2016
5 Questions
| Total Attempts: 74
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Questions and Answers
- 1.As an object falls freely in a vacuum, its
- A.
Velocity increases.
- B.
Acceleration increases.
- C.
Both A and B.
- D.
None of the above.
- 2.A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be
- A.
Less than the speed it had when thrown upwards.
- B.
More than the speed it had when thrown upwards.
- C.
The same as the speed it had when thrown upwards.
- 3.A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. During this time the acceleration of the ball is always
- A.
In the direction of motion.
- B.
Opposite its velocity.
- C.
Directed downward.
- D.
Directed upward.
- 4.Objects that are thrown up into the sky move
- A.
A. faster and faster.
- B.
B. slower and slower
- C.
C. at a constant velocity.
- D.
D. slower then faster.
- 5.Which would hit the ground first if dropped from the same height in a vacuuma feather or a metal bolt?
- A.
A. the feather
- B.
B. the metal bolt
- C.
C. They would hit the ground at the same time.
- D.
D. They would be suspended in a vacuum.
Questions: 5 | Attempts: 151 | Last updated: Sep 16, 2016
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