Two students are moving 90-N cartons of books from the floor to a platform. One student moves 11 cartons in 6 minutes. The other student moves 11, cartons in 5 minutes. Which student does more work on her cartons? Explain your answer.​

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Why does lightning travel from clouds to the ground?

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.