You need to know the time as well.
The answer is A. Bob (<span>object's length)
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According to newton's law Force = mass * acceleration
so , 100 = 50 * a
so , a= 2 m/s^2
<span>The answer is C. This is called polarization of light by reflection. The sunlight is reflected at a parallel angle from on the surface plane of the water from which it bounces from. The glare is due to this polarization of sun beams at an angle with respect to the viewer. </span>
