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Inelastic collision

Classical mechanics index

If one body (A) with a velocity (a) strikes a second body (B) and sticks to it, then the resulting larger body will have a slower velocity (b), calculable by the law of conservation of momentum.
 Mass A kg --- METRIC --- ng µg mg grams tonnes M tonnes -- IMPERIAL -- grains ounces pounds stones cwt tons --- OTHER --- u (Da) Troy ounces carats pennyweight Moons Earths Suns Velocity a m/s --- METRIC --- cm/s km/s -- IMPERIAL -- inches/second feet/second feet/minute - RECIPROCAL - min/mile min/km min/5 km min/10 km --- OTHER --- km/h mph miles/second knots furl's/f'night Mach c (light speed) Mass B kg --- METRIC --- ng µg mg grams tonnes M tonnes -- IMPERIAL -- grains ounces pounds stones cwt tons --- OTHER --- u (Da) Troy ounces carats pennyweight Moons Earths Suns Velocity b m/s --- METRIC --- cm/s km/s -- IMPERIAL -- inches/second feet/second feet/minute - RECIPROCAL - min/mile min/km min/5 km min/10 km --- OTHER --- km/h mph miles/second knots furl's/f'night Mach c (light speed) Mass B kg --- METRIC --- ng µg mg grams tonnes M tonnes -- IMPERIAL -- grains ounces pounds stones cwt tons --- OTHER --- u (Da) Troy ounces carats pennyweight Moons Earths Suns Velocity b m/s --- METRIC --- cm/s km/s -- IMPERIAL -- inches/second feet/second feet/minute - RECIPROCAL - min/mile min/km min/5 km min/10 km --- OTHER --- km/h mph miles/second knots furl's/f'night Mach c (light speed) Momentum kg⋅m/s mcp Add

In any closed system, momentum is conserved. Thus, it is possible to equate momentum in the start and final states of a system and thus calculate an unknown.
Fill in the "start" conditions: Mass and velocity of A. Then fill in either the mass of B or the final velocity of A+B. The calc will provide the unknown mass or velociy of B.
The calc also gives the momentum of the system.