) The position of a particle is given by the equation of motion = () = 1/
(1+)

, where is measured in seconds and in meters. Find the velocity

and the speed after 2 seconds.​

Arescue plane flying horizontally at spots a survivor in the ocean directly below and releases an emergency kit with a parachute. because of the shape of the parachute, it experiences insignificant horizontal air resistance. if the kit descends with a constant vertical acceleration of, how far away from the survivor will it hit the waves?

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.