PLEASE HELP ME I DONT UNDERSTAND THIS

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.

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of