A package is dropped from a helicopter moving upward at 15m/s. If the helicopter was 1000m above the ground when the package was released, how long does it take before the package strikes the ground

After an atomic bomb has been dropped, the damage continues to get worse. why is this?

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

Astate of matter all that has define volume and can flow is a(n)