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9 Nov 2019
Two identical pucks slide across a level frictionless table.Initially, the pucks have the same speed, but their velocities areperpendicular to each other as shown. The same constant force isexerted on each puck for the same time interval: from the instantshown until puck 1 crosses the second dotted line. The pucks remainon the table and do not collide during this time interval.
When puck 1 crosses the second dotted line, is the kineticenergy of puck 1 greater than, less than, or equal to the kineticenergy of puck 2 at the same instant? Explain the reasoning youused in making this comparison.
Two identical pucks slide across a level frictionless table.Initially, the pucks have the same speed, but their velocities areperpendicular to each other as shown. The same constant force isexerted on each puck for the same time interval: from the instantshown until puck 1 crosses the second dotted line. The pucks remainon the table and do not collide during this time interval.
When puck 1 crosses the second dotted line, is the kineticenergy of puck 1 greater than, less than, or equal to the kineticenergy of puck 2 at the same instant? Explain the reasoning youused in making this comparison.
Irving HeathcoteLv2
26 Oct 2019