100 POINTS!! PLEASE DONT ANSWER UNLESS YOU KNOW BOTH ANSWERS PLEASE. If a bike hits a rock and suddenly stops, the rider flies over the handlebars due to .
A. absolute zero B. displacement C. inertia D. electromagnetic spectrum

During a track meet, Sarah ran 400m in 80s. What was her average speed? (Remember s=d/t)

A. 5 m/s

B. 20 m/s

C. 15 m/s

D. 15 mph

1. is B and 2. is A

Explanation:

1. Displacement

2.  5 m/s  400 ÷ 80 = 5

Explanation:

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

i believe the answer would be:

d. violin, clarinet, french horn, and tuba