Aspring with a force constant of 5100 n/m and a rest length of 2.6 m is used in a catapult. when compressed to 1.0 m, it is used to launch a 48 kg rock. however, there is an error in the release mechanism, so the rock gets launched almost straight up. how high does it go (in m)? (assume the rock is launched from ground height.) m how fast is it going (in m/s) when it hits the ground? m/s

Aweather forecaster uses doppler radar to predict the track of a storm near the town of meadowlands. when the doppler signal is pointed at the storm from the town's center, the frequencies of the waves appear to be decreasing. what should the weather forecaster predict? a. that the storm will move around the edges of meadowlands without hitting the tosis center o b. that residents should be prepared, because it is impossible to know whether the storm will hit o c. that the storm is moving toward meadowlands and that residents should be prepared d. that the storm is moving away from meadowlands and is not likely to hit the town