Question

A 95 kg Running back, Tiki Barber breaks away from the line and was running 4.1 m/s when tackled by Honde.

Answer 1

• m1=95kg
• m2=85kg
• v1=4.1m/s
• v_2=5.5m/s
• v3=?

$\\ \sf\longmapsto m1v1+m2v2=(m1+m2)v3$

$\\ \sf\longmapsto 95(4.1)+85(5.5)=(95+85)v3$

$\\ \sf\longmapsto 389.5+467.5=180v3$

$\\ \sf\longmapsto 857=180v3$

$\\ \sf\longmapsto v3=857/180$

$\\ \sf\longmapsto v3=4.76m/s$