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6 Nov 2019
A large boulder is ejected vertically upward from a volcano with an initial speed of 39.5 m/s. Air resistance may be ignored.
At what time after being ejected is the boulder moving at a speed19.5 m/s upward?
At what time is it moving at a speed of 19.5 m/s downward?
When is the displacement of the boulder from its initial position zero?
When is the velocity of the boulder zero?
What is the magnitude of the acceleration while the boulder is moving?
What is the direction of the acceleration while the boulder is moving (up or down)?
A large boulder is ejected vertically upward from a volcano with an initial speed of 39.5 m/s. Air resistance may be ignored.
At what time after being ejected is the boulder moving at a speed19.5 m/s upward?
At what time is it moving at a speed of 19.5 m/s downward?
When is the displacement of the boulder from its initial position zero?
When is the velocity of the boulder zero?
What is the magnitude of the acceleration while the boulder is moving?
What is the direction of the acceleration while the boulder is moving (up or down)?
Zubair AslamLv8
7 Feb 2019
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