Amountain climber stands at the top of a 47.0-m cliff that overhangs a calm pool of water. she throws two stones vertically downward 1.00 s apart and observes that they cause a single splash. the first stone had an initial velocity of −1.40 m/s. (indicate the direction with the sign of your answers.) (a) how long after release of the first stone did the two stones hit the water? (round your answer to at least two decimal places.)

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