Answered: Before: After: 4) Work Energy Theorem:… | bartleby

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Before:
After:
4) Work Energy Theorem: A two man
bobsled has a mass of 390Kg. Starting
from rest, the two racers push the
sled for the first 50m with a net force
of 270N. Neglecting friction what is
sled's speed at the end of 50m?
V; = (
Known
Find: v,
Strategy: Start with the work energy
theorem which is, Work done is equal to
change in kinetic energy
m = 390 kg F = 270 N
d = 50 m
V = 0 m/s
W =
K5 – Kị
Now substitute for Kf and K; and solve the equation for final velocity.

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