1. A locomotive is accelerating at 1.46 m/s2. It passes through a 24.2-m-wide crossing in a...
1. A locomotive is accelerating at 1.46 m/s2. It
passes through a 24.2-m-wide crossing in a time of 2.30 s. After
the locomotive leaves the crossing, how much time is required until
its speed reaches 29.7 m/s?
2. A ball is thrown straight upward. At 6.60 m above its launch point, the ball’s speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
3.While standing on a bridge 18.9 m above the ground, you drop a
stone from rest. When the stone has fallen 3.30 m, you throw a
second stone straight down. What initial velocity must you give the
second stone if they are both to reach the ground at the same
instant? Take the downward direction to be the negative
direction.
Homework Answers
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1. A locomotive is accelerating at 1.46 m/s2. It
passes through a 24.2-m-wide crossing in a...
A locomotive is accelerating at 2.34 m/s2. It passes through a 20.3-m-wide crossing in a time...
A locomotive is accelerating at 2.34 m/s2. It passes through a 20.3-m-wide crossing in a time of 2.97 s. After the locomotive leaves the crossing, how much time is required until its speed reaches 34.9 m/s?
While standing on a bridge 30.0 m above the ground, you drop a stone from rest. When the...
While standing on a bridge 30.0 m above the ground, you drop a stone from rest. When the stone has fallen 5.00 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take the downward direction to be the negative direction.
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