jalinkelleyq jalinkelleyq
  • 15-02-2017
  • Physics
contestada

a rock is dropped from a height of 80 m and is in free fall what is the velocity of as it reaches the ground 4.0 seconds later

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Brandon7716
Brandon7716 Brandon7716
  • 15-02-2017
Velocity = displacement (distance)/time

v=80m/4s

v=20m/s

velocity = 20 meters per second
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