1.

Collect some pictures of that sport in action where friction is either supporting it or opposing it

Answer»

Supporting FRICTION
1) Cycling - the friction between the tires and the road are necessary for the bike to function 
2) Running - the friction between the athlete's feet and the ground surface is necessary otherwise the runner would fall over 
3) Swimming - the friction in the water is required for the swimmer to be propelled forward 

Opposing friction 
1) Swimming - the friction makes it more difficult for the swimmer to swim very fast 
2) Bobsleigh - the aim is to go as fast as possible but the friction between the bottom of the sleigh and the ice SLOWS it down 
3) Diving - the friction between the diver and the water creates wasted Kinetic energy and sound energy whereas the aim is to be as streamlined as possible 


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