Suppose a 1 gbps point-to-point link is being set up between the earth and a new lunar colony. the distance from the moon to earth is approximately 385,000 km, and data travels over the link at the speed of light (3 x 10⁸ meters per
calculate the minimum rtt (two-way propagation time) for the link.(in other words, how long would it take to send a single bit to the moon and immediately bounce it right back to earth? )

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