NASA has developed Deep-Space 1 (DS-1), a spacecraft that is scheduled to rendezvous with the asteroid named 1992 KD (which orbits the sun millions of miles from the earth). The propulsion system of DS-1 works by ejecting high-speed argon ions out the rear of the engine. The engine slowly increases the velocity of DS-1 by about 19.0 m/s per day.
1.What is the acceleration of DS-1 (in m/s2)?
From her bedroom window a girl drops a water-filled balloon to the ground, 4.2 m below.
2.If the balloon is released from rest, how long is it in the air?(seconds)
