The figure depicts a hockey puck sliding with a constant speed v0 in a straight line from point "a" to point "b" on a frictionless horizontal surface. Forces exerted by the air are negligible. You are looking down on the puck. When the puck reaches point "b," it receives a swift horizontal kick in the direction of the heavy print arrow. Had the puck been at rest at point "b," then the kick would have set the puck in horizontal motion with a speed vk in the direction of the kick. The speed of the puck just after it receives the kick is: equal to the speed "v0" it had before it received the kick. equal to the speed "vk" resulting from the kick and independent of the speed "v0". equal to the arithmetic sum of the speeds "v0" and "vk". smaller than either of the speeds "v0" or "vk". greater than either of the speeds "v0" or "vk", but less than the arithmetic sum of these two speeds

The figure depicts a hockey puck sliding with a constant speed v0 in a straight line from point "a" to point "b" on a frictionless horizontal surface. Forces exerted by the air are negligible. You are looking down on the puck. When the puck reaches point "b," it receives a swift horizontal kick in the direction of the heavy print arrow. Had the puck been at rest at point "b," then the kick would have set the puck in horizontal motion with a speed vk in the direction of the kick. The speed of the puck just after it receives the kick is: equal to the speed "v0" it had before it received the kick. equal to the speed "vk" resulting from the kick and independent of the speed "v0". equal to the arithmetic sum of the speeds "v0" and "vk". smaller than either of the speeds "v0" or "vk". greater than either of the speeds "v0" or "vk", but less than the arithmetic sum of these two speeds