Please help me with these questions for my lab-report. PREETY PLEASE. URGENT HELP. ASAP.

THE QUESTIONS UNDER DISCUSSION.
PS. THE TOPIC IS SIMPLE MACHINES
the questions under discussion i need help with.

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

Most short-period comets do not have randomly oriented orbits because

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.