A billiards player hits a stationary ball by an identicaI ball to pocket the target ball in a comer pocket that is at an angle of 35°with respect to the direction of motion of the first ball. Assuming the collision as elastic and that frictionaI and rotational motions are not important, the angle made by the target ball with respect to the incoming ball is

Question

A billiards player hits a stationary ball by an identicaI ball to pocket the target ball in a comer pocket that is at an angle of 35°with respect to the direction of motion of the first ball. Assuming the collision as elastic and that frictionaI and rotational motions are not important, the angle made by the target ball with respect to the incoming ball is (A)  35° (B)  50° (C)  55° (D)  60°

Tardigrade Admin · Accepted Answer

The angle made by the target ball with respect to the incoming ball = 90 - 35° = 55°

$3 5^{\circ}$

$5 0^{\circ}$

$5 5^{\circ}$

$6 0^{\circ}$

The angle made by the target ball with respect to the incoming ball
= $90 - 3 5^{\circ}$
= $5 5^{\circ}$

35∘

50∘

55∘

60∘

The angle made by the target ball with respect to the incoming ball = 90−35∘ = 55∘

$3 5^{\circ}$

$5 0^{\circ}$

$5 5^{\circ}$

$6 0^{\circ}$

The angle made by the target ball with respect to the incoming ball
= $90 - 3 5^{\circ}$
= $5 5^{\circ}$