Question

Spider-Man is running at a speed of 4.5 m/s and swings on his web from a street light directly above him. How high can he swing?

Answer 1

Answer on Question #48078, Physics, Mechanics — Kinematics — Dynamics Spider-Man is running at a speed of 4.5 m/s and swings on his web from a street light directly above him. How high can he swing? Solution

We will use conservation of energy. Kinetic energy is equal to potential:

$\frac{mv^{2}}{2}=mgh$

Hence, he can swing at height

$h=\frac{v^{2}}{2g}=\frac{4.5^{2}}{2\cdot 9.8}\approx 1\,m$

http://www.AssignmentExpert.com/