Question
1 point In the absence of air resistance, a rock is thrown straight upward with an initial velocity of v_(0) . What is the velocity of the object at the instant it returns to the same height it was thrown from? Assume up is the +y +yaxis. vgt +v_(0) v=+v_(0) +v_(0)gt vgt 0 v=0 0lt vlt -v_(0) v=-v_(0) vlt -v_(0)
Answer
4.6
(223 Votes)
Chester
Master · Tutor for 5 years
Answer
Explanation
When an object is thrown upward in the absence of air resistance, it will decelerate until it reaches its peak height, then accelerate back downwards due to gravity. Upon returning to its original height, its velocity will be equal in magnitude but opposite in direction to its initial velocity.