Two curling stone collides on an ice rink, stone 1 has a mass of 21 Kg and an initial velocity of 1.7m/s to the north, stone 2 has amass of 16Kg it was at rest initially, the stone collide dead center (a) what was the final velocity of stone 1 and stone 2?

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball