Answer Happy

The sport of curling is quite popular in Canada. A curler slides a 19.1-kg stone so that it strikes a competitor's identical stationary stone at 6.90 m/s before moving at an angle of 60.0∘ counterclockwise from its initial direction. The competitor's stone moves off at 6.30 m/s. Determine the final speed of the first stone v1,f​. Determine the final direction of the second stone as angle α relative to the first stone's initial direction of motion. Let counterclockwise from the first stone's initial direction define α the direction of positive angles. Incorrect