Amotorcyclist heading east through a small town accelerate at constant 4.0meter per seconds square after he leaves the limits. at t=0 he is 5.0m east of the city limit signposts, moving east at 15 m/s. (a) find his position and velocity at t=2.0secs. (b)where is he when his velocity is 25m/secs.

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?