Apacket is dropped from a stationary helicopter, hovering at a height 'h' from the ground level, reaches the ground in 12s. calculate

1) value of 'h' "displacement"
2) final velocity of packet on reaching ground level

take acceleration due to gravity=9.8ms^-2

show how you received your answer.

Write short note on the following ; collision theory, rotation angle and angular velocity, centripetal acceleration, coriolis force, and newton's law of gravitation.

Which feature of a heating curve indicates a change ofn state

Which lists correctly orders nuclear reactions from most radioactive waste generated to least waste generated within a given period of time? o a. radioactive decay, nuclear fission, nuclear fusion o b. radioactive decay, nuclear fusion, nuclear fission o c. nuclear fusion, nuclear fission, radioactive decay o d. nuclear fission, nuclear fusion, radioactive decay