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grewas8
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Homework Statement
Oliver has a mass of 59.1 kg and can throw a 558.0 g rock with a speed of 19.8 m/s. What would Oliver's recoil speed be if he were on an icy surface?
Homework Equations
Momentum is conserved in an isolated system (when Fnet=0 or no external forces are acting on the system)
p=mv
mass(object 1)*initial velocity (object 1) + mass(object2)*initial velocity (object 2)= Mass (object 1)*final velocity (object 1) + mass (object 2)*final velocity (object 2)
The Attempt at a Solution
m (oliver)= 59.1 kg, m(rock)= 0.588 kg, initial velocity = 19.8 m/s
p(oliver+ rock)= mv
p= (59.1+0.588)(19.8) =1181.8 kg m/s (seems quite too large--> unreasonable?)
on ice (frictionless i assume) no net external forces so Fnet=0
i don't understand what recoil velocity means? Is it the rebound velocity? would be equal and opposite?:grumpy:
***Any help would be appreciated ****