Asprinter explodes out of the starting block with an acceleration of +4.2 m/s2, which she sustains for 0.9 s. then, her acceleration drops to zero for the rest of the race. (a) what is her velocity at t = 0.9 s. m/s (b) what is her velocity at the end of the race? m/s

Natural forces that can alter ecosystems include seasons and climate changes. t or f

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato