Explanation:
Journey Through the Solar System was a 13-episode documentary series produced by NASA's Lewis Research Center in 1983. Each half-hour episode contained the entirety or clips of older NASA films with framing host footage with Larry Ross, Director of Space Science at Lewis.
Answer:
The ball takes 5s to reach the ground
Explanation:
in order to solve this problem we use the kinematics equation with gravity as acceleration:

we replace the values

We solve this quadratic equation:
t=5s
t=-6s (this solution has not physical sense)
The mass of Laura and the sled combined is 887.5 kg