Answer:
5 km/hr because he thinks it moves in the same speed of his...
As far as I remember, it usually takes more force to start an object sliding than it does to keep an object sliding because static friction is usually <span>greater </span>than sliding friction.
The same speed of light, the fastest possible
darkness is just the absence of light therefore once light leaves darkness returns. making darkness have the same speed of light
By knowing the solar. And the sun disk.
To Find The Acceleration of A Car Slowing Down:
The change in speed is the final speed minus the initial speed. To find acceleration, divide the change in velocity by the length of time during which the velocity changed.