Question

Two identical balls come into a collision with a coefficient of restitution e= 0.8. Before the impact, ??=7m/s and??=3m/s. Their directions are as shown. Determine the magnitude of velocity of each ball after the impact.

define a coordinate system apporiately.

calculate the 2 compoents of each veolcity before the impact

apply the right principles / equaions to determine the component velocities of each ball after impact

determine the magnitude of the velocity of each ball after the impact

Answer 1

solo Two identical balls Came into Collision, Coefficient of restitution, e=0.8 VB VA = 7 m/s and VB = 3m/ y ។ VA ve 2x 26 B А VAT VA X VADE VA velocities before impact are. T UBY NB SBY u= Alt = VA Cosao Coordinate system u = 7 Cos20 u = 6.578 M/S "₂ = VB)x VB Costo 3 Costo 42 = 1.026 m/s Coefficient of restition, e= > 0.8 - > V₂-VI 4,-42 V₂-V, 5.552 Ve-V, = ५.५५) from principle of conservation of linear momentum, 1 in, " + m2 42 m, v,+ m₂ V2 me=m2 V₂ +V = 7.604 → ③ since, identical ball on solving o ço 29, we we get V = 1.581 m/s Velocity of balls after Impact . 6.022 m/s