61. a sandal is dropped from the top of a 15.0-m-high mast on a ship moving at 1.75 m/s due south. calculate the velocity of the sandal when it hits the deck of the ship: (a) relative to the ship and (b) relative to a stationary observer on shore. (c) discuss how the answers give a consistent result for the position at which the sandal hits the deck.

Answered

Explanation:

u = 1.75 m/s

h = 15 m

Now, for the magnitude of velocity when hitting the deck

Using third equation of motion

v^2 - 1.75^2 = 2×9.8×15

v = 17.15 m/s

the velocity of sandal when it hits the deck is 17.15 m/s this the velocity of sandal relative to the ship

b) velocity relative to a stationary observer on shore

=

=17.23 m/s

To a person aboard the ship, they see the sandal land directly below the release point. A stationary observer on the outside sees the same thing, except the fact that  the landing point has translated to the south.

the answer is kevlar

the answer is b, have negligible mass