A ball is thrown upward from the ground with an initial speed of 25m/s. At the same instant, another ball is
dropped from a hot air balloon that is rising a 5 m/s
and is 15m high. After how long with the balls be at the
same height? At what height do the paths of the balls.
cross? Does the first ball ever cross paths with the
balloon? If so, when and where?

Describe uniform velocity and variable velocity in short

Which levels of government establish and implement educational requirements for minors

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.