Can a person run faster on concrete or grass?

HYPOTHESIS:

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• An average person can run 8:15 on
• grass and 7:50 on concrete.
• The difference is about 20 seconds.

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• Grass slows you down because it's
• a thicker surface and provides too much
• friction. You can't get much grip on
• grass so you could possibly fall. Grass
• has more incline and is also a better workout.

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• You can run much faster on a hard surface
• than a soft surface. The harder the surface,
• the better the speed. You have lots of grip
• on concrete and better control. Hard surfaces
• gets your legs to have more bounce.

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• Even thought running on concrete is faster than
• running on grass, it has it's faults. Running on
• concrete is hard on your legs, shins, ankles, ect.
• To get better results running on grass, pick up
• your feet higher on every stride.

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Dependent :

Hypothesis :

CONCLUSION: