At which point is the velocity the greatest?
at which points is the velocity 0 m/s?
at which point is the acceleration 0 m/s2?
at which points is the acceleration the greatest?

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

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 temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)