Answer:
All trenches must have access/egress - A.
Light speed is the speed at which light can travel in a "vacuum" (space for example).
The speed of light is constant and is exactly: 299,792,458 meters per second
ONLY IN A VACUUM!!
The speed of light changes when it goes through different mediums (such as from space to Earth, light travels slower in Earth).
Good luck!
Answer:
the average speed of the car during this time interval is 40 m/s i thinkk..
Greater the mass greater is inertia. Greater the inertia greater is the force required to stop motion of an object. Linear motion depends only on mass whereas rotational motion depends on mass, size and shape of an object. So conclusion is that it would be difficult to stop 10 kg mass cuz of greater inertia compared to 1kg mass. Hope it clears your doubt.
