1. The tension at which a fishing line snaps is commonly called the line's "strength." What minimum strength is needed for a line that is to stop a salmon of weight 85 N in 8.0 cm if the fish is initially drifting at 2.5 m/s? Assume a constant deceleration.
Weight of the salmon=w= 85 N
Acceleration due to gravity g= 9.81 m/s^2
Mass of the salmon=w/g= 8.66 Kg =85/9.81
v1= 2.5 m/s
v2= 0 m/s
x=distance travelled= 8 cm= 0.08 m
v^2=v1^2+2ax, assuming constant ...
The solution calculates the minimum strength is needed for a line that is to stop a salmon.