Tarzan swings on a 43.0 m long vine initially
inclined at an angle of 42.0â—¦ with the vertical.
The acceleration of gravity if 9.81 m/s2 .
What is his speed at the bottom of the
swing if he

a) starts from rest? Answer in units of m/s.

b) pushes off with a speed of 4.00 m/s? An-
swer in units of m/s.