Impact

Atilla1982

A boy with a weight of 70 kg jumps down from a 3 meter high tree. His velocity on impact I have found to be 7,68 m/s and the impulse is 536,7kg*m/s. Now I need to find the average velocity during impact. What formula do I have to use?

Päällikkö

What's the definition of average velocity?

BerryBoy

I suppose, if acceleration is constant, then:

v_ave. = (v₁ + v₀)/2

An important point I'd like to raise here:

Weight is a force, therefore it has the units of Newtons. Obviously the man doesn't have a mass of 7kg so I can only assume the his weight is 700N (with g = 10ms^-2).

Regards,
Sam

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Atilla1982	Impact Tweet A boy with a weight of 70 kg jumps down from a 3 meter high tree. His velocity on impact I have found to be 7,68 m/s and the impulse is 536,7kg*m/s. Now I need to find the average velocity during impact. What formula do I have to use?

Päällikkö Recognitions: Homework Help	What's the definition of average velocity?

BerryBoy	I suppose, if acceleration is constant, then: v_ave. = (v₁ + v₀)/2 An important point I'd like to raise here: Weight is a force, therefore it has the units of Newtons. Obviously the man doesn't have a mass of 7kg so I can only assume the his weight is 700N (with g = 10ms^-2). Regards, Sam