As we know that collision is elastic so we will have


also we can use momentum conservation



now from above two equations we will have


also we have

so both balls will separate after collision and move in opposite direction as the final velocities are opposite in sign
So correct answer will be
<em>D. The balls separate and move in opposite directions.</em>
250/4= 62.5 mph
to find the mph of a car, you need to divide the number of miles traveled by the hours that it took to travel that many miles
Volume=mass/density
volume=455.6/19.3
volume=23.6 mL
To score in the correct goal