Assume you are driving in a car with a total mass of m = 1250 kg at vi = 20 m/s. You see a light turn red half a mile in front of you and take your foot o the gas. If the wind resistance and all frictional forces combine to supply a force of Fnet = 1000 N, what is your speed after 5 s? What is your speed after 30 s?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

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

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .