Physics Questions - Module #3
- Feel free to use the questions below to check (or improve) your understanding of the concepts in this physics module.
- A freely falling object started from rest. 2 seconds later, its speed is about
- 5 m/s
- 10 m/s
- 15 m/s
- 20 m/s
- 25 m/s
- 30 m/s
- 35 m/s
- A base ball is hit straight up into the air at a speed of 20 m/s. How long does it take to reach the high-point in its trajectory.
- 1/2 seconds
- 1 second
- 2 seconds
- 4 seconds
- 5 seconds
- 10 seconds
- 20 seconds
- Galileo used inclined planes to ____ the effective acceleration (of a rolling cylinder or ball) compared to earth's gravity
- increase
- stop
- decrease
- keep the same
- none of the above
- all of the above
- A baseball is hit vertically upward at 30 m/s. One second later its speed is about ____ vertically upward.
- 30 m/s
- 35 m/s
- 40 m/s
- 25 m/s
- 20 m/s
- 15 m/s
- 10 m/s
- 0 m/s
- A ball is thrown upwards and caught once it comes back down. The speed of the ball as it returns and is caught is ___ if there is air resistance compared to if there were no air resistance.
- greater
- the same
- double
- zero
- infinite
- lower
- none of the above
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