Maybe if the apple hit Issac newton's head, then physics class wouldn't exist

Aball is thrown upward in the air, and its height above the ground after t seconds is h ( t ) = 57 t − 16 t 2 feet. find the time t when the ball will be traveling upward at 14.25 feet per second.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Asher cycles 12 miles in 16 hours. what is his speed?