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Kate2018
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Homework Statement
Lee is riding on her 6 kg skateboard with a constant speed of 2 m/s. She jumps off of her skateboard and continues forward with a velocity of 4 m/s relative to the ground. This causes the skateboard to go flying forward with a speed of 18.5 m/s relative to the ground. What is Lee’s mass?
Homework Equations
m1v1+m2v2= (m1+m2)v3
m1v1+m2v2=m1v3+m2v4
The Attempt at a Solution
Info
m1=?
v1= 2m/s
m2= 6kg
v2=2m/s
v3=4m/s
v4= 18.5m/s