Playing tetherball, a boy hits the 0.45 kg ball, moving toward him initially at 4.6 m/s, in the opposite direction at 2.5 m/s. H
1 answer:
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Take the stone's position at ground level to be the origin, and the downward direction to be negative. Then its position in the air at time
is given by
Let be the depth of the well. The stone hits the bottom of the well after 5.00 s, so that
Answer:
2s
Explanation:
Given parameters:
Distance = 30m
Speed = 15m/s
Unknown:
Time before Laurence caught it = ?
Solution:
To solve this problem;
Speed =
Time taken = =
= 2s
The time it takes is 2s