Projectile motion equations_of_motion
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This document discusses projectile motion and contains questions about calculating the maximum height, position, and velocity of a ball thrown upwards from the top of a cliff at 30 m/s. It asks the reader to calculate: a) the maximum height reached, b) the position after 4 seconds, c) the velocity after 4 seconds, d) the position after 6.5 seconds, and e) the position 3 seconds after reaching maximum height. It provides headings to guide the calculations for each question.
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The document discusses factors that affect photoelectric emission from metals.
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- 1. Projectile motion Equations of motion
- 2. Questions A ball is thrown upwards at 30 mโขs-1 from the top of a high cliff. Calculate the: a. ballโs maximum height it reaches above the point it leaves the throwerโs hand. b. ballโs position 4 s after leaving the throwerโs hand. c. ballโs velocity 4 s after leaving the throwerโs hand. d. ballโs position 6,5 s after leaving the throwerโs hand. e. ballโs position 3 s after being at its highest point. f. time(s) when the ball is 5 m above the throwerโs hand.
- 3. Maximum height a. Calculate the maximum height it reaches above the point it leaves the throwerโs hand.
- 8. Height at given time 1 b. Calculate its position 4 s after leaving the throwerโs hand.
- 11. b. Height at 4 s
- 13. Velocity at given time c. Calculate its velocity 4 s after leaving the throwerโs hand.
- 15. b. Velocity at 4 s
- 18. Height at given time 2 d. Calculate its position 6,5 s after leaving the throwerโs hand.
- 21. d. Position at given time 2
- 24. Height at given time 3 e. Calculate its position 3 s after being at its highest point.
- 27. e. Position at given time 3