A car starts at rest and speeds up with an average positive acceleration of 4.0 meters per second squared (m/s2), in a straight line. The car travels a distance of 98 meters (m) in 7.0 seconds (s). Calculate the car's final velocity in meters per second (m/s) after 7.0 s. Enter the number in the box

56 seconds

Explanation:

7.0/4.0 = 1.75

98/1.75 = 56

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).

the answer is a)

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