1 a stone is dropped from rest from a certain height in the tcc science building on earth where it reaches the ground in 175s later an astronaut drops a similar stone from the same height du 79743

1. An astronaut is standing on the surface of a strange planet. The astronaut throws a rock directly upward. At the time the rock leaves his hand, it is traveling with a velocity of 15.0 m/s, and it is a distance of 1.31 m above the planet's surface. Gravity on this planet gives the rock a constant downward acceleration of 3.24 m/s2. How far, in meters, above the planet's surface is the rock 3.48 s after leaving the astronaut's hand 2. A ball is thrown from the ground straight up in the air, reaches some maximum height, then falls to be caught by a person on top of a building, 8.07 m above the ground. The time between when it was thrown and when it was caught is 3.74 s. Find the maximum height (in m) it reached (above the ground). 3. A westbound car on the PA turnpike passes the exit for the northeast extension traveling at 16.2 m/s. If the car experiences a constant eastward acceleration of 2.13 m/s2, give the car's velocity after 3.36 s. Answer in m/s, using a coordinate system in which positive is toward the east. 4. An astronaut is standing on the surface of a strange planet. The astronaut throws a rock directly upward. At the time the rock leaves his hand, it is traveling with a velocity of 13.5 m/s, and it is a distance of 0.747 m above the planet's surface. Gravity on this planet gives the rock a constant downward acceleration of 1.94 m/s2. How long, in seconds, after the rock leaves the astronaut's hand will it land on the planet's surface?

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