Nellie tosses a ball upward at an angle. Neglecting air resistance, the horizontal component of the initial velocity
A) decreases with time.
B) remains constant.
C) increases with time.
Answer: B
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A) current. B) voltage. C) resistance.
Two balls are thrown off a building with the same speed, one straight up and one at a 45° angle. Which statement is true if air resistance can be ignored?
(a) Both hit the ground at the same time. (b) Both hit the ground with the same speed. (c) The one thrown at an angle hits the ground with a lower speed. (d) The one thrown at an angle hits the ground with a higher speed. (e) Both (a) and (b).
The deBroglie wavelength for a particle indicates its
A. position B. momentum C. mass D. physical extent in space
Describe the difference between an umbral and a penumbral lunar eclipse as seen by an observer on Earth
What will be an ideal response?