Image<span> formed by a </span>plane mirror is<span> always </span>virtual<span> which means that the light rays </span>do<span> not actually come from the </span>image but<span> upright and these of the same shape and size are the object it </span>is<span> reflecting.</span>
A change in the position of a body with respect to time relative to a reference point is motion.
Because there is no absolute point of reference, there is no true discernible absolute motion, and therefore, everything is said to be moving constantly.
Hope that helped =)
D A little longer than a yard (about 3 ft)
I can never remember whether the '100 T' is the gross weight of the ship or the weight of the cargo it can carry. Let's say it's the gross loaded weight. / / / A 100 ton floating ship displaces 100 tons of water, and the bbuoyant force on it is 100 tons.