Hail comes straight down at a mass rate of m/δt = 0.050 kg/s and an initial velocity of v0 = -15 m/s and strikes the roof perpendicularly. unlike rain, hail usually does not come to rest after striking a surface. instead, the hailstones bounce off the roof of the car. suppose that the hail bounces off the roof of the car with a velocity of +15 m/s. ignoring the weight of the hailstones, calculate the force exerted by the hail on the roof.

Aprojectile is launched from ground level with an initial velocity of v 0 feet per second. neglecting air resistance, its height in feet t seconds after launch is given by s equals negative 16 t squared plus v 0 t. find the time(s) that the projectile will (a) reach a height of 192 ft and (b) return to the ground when v 0equals112 feet per second. (a) find the time(s) that the projectile will reach a height of 192 ft when v 0equals112 feet per second. select the correct choice below and, if necessary, fill in the answer box to complete your choice.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)