What is the final velocity of a running back that is moving with an initial velocity of 3 m/s and accelerates at a rate of 4 m/s2 in 1 seconds as he moves toward the defensive line?

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

It's time for santa to deliver his presents. assuming he delivers presents all over the world, he has to travel about 75,000,000 miles. if he travels east to west, he can use the time zones to make christmas day last 31 hours. what speed, in miles per hour, must santa fly to get all of his presents delivered?