3. A object is thrown upward from the edge of a building with a velocity of 20m/s. then where will the object be at 3 sec. and 5 sec?​

Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?

The least penetrating form of radiation is

Why do astronauts in the space shuttle weigh less?