Assume: Moving to the right is positive. A(n) 7 g object moving to the right at

Question

Assume: Moving to the right is positive. A(n) 7 g object moving to the right at 22 cm/s makes an elastic head-on collision with a 18 g object moving in the opposite direction at 44 cm/s.

Find the velocity of the first object
immediately after the collision.

Find the velocity of the second object
after the collision.

Assume: Moving to the right is positive. A(n) 7 g object moving to the right at 22 cm/s makes an elastic head-on collision with a 18 g object moving in the opposite direction at 44 cm/s. Find the velocity of the first object immediately after the collision. Find the velocity of the second object after the collision.

Explanation / Answer

V1 = ( m1 - m2 ) / ( m1 + m2 ) * u1 + 2 m2 u2 / ( m1 + m2 ) V1 = ( 7- 18) / ( 7+18) * 22 + 2 * 18 * (-44) / ( 7 + 18) V1 = -73.04 V2 = ( m2 - m1 ) / ( m1 + m2 ) * u2 + 2 m1 u1 / ( m1 + m2 ) V2 = (18-7)/ ( 7 +18) * (-44) + 2 * 7 * 22 / (7+18) V2 = -7.04

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