The car moves at 300 m/s on a highway, after 25s the car stops. What is acceleration?

12

Explanation:

Acceleration=change in velocity/change in time

Change in velocity is 300-0 (because the car stops meaning velocity is 0) so the change is 300.

Change in time is 25-0(because time started at 0 secs.

300/25=12m/s^2

12

Explanation:

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

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