Agirl drops a pebble from a high cliff into a lake far below. she sees the splash of the pebble hitting the water 2.00s later. how fast was the pebble going when it hit the water?

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

In a system, when potential energy decreases, then entropy also decreases. true false

An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station