Cliff divers at Acapulco jump into the sea?
November 15th, 2008 | by admin |Rob L asked:
Cliff divers at Acapulco jump into the sea
from a cliff 30.8 m high. At the level of the
sea, a rock sticks out a horizontal distance of
10.43 m.
The acceleration of gravity is 9.8 m/s2 .
With what minimum horizontal velocity
must the cliff divers leave the top of the cliff if
they are to miss the rock? Answer in units of
m/s.
Lois
Cliff divers at Acapulco jump into the sea
from a cliff 30.8 m high. At the level of the
sea, a rock sticks out a horizontal distance of
10.43 m.
The acceleration of gravity is 9.8 m/s2 .
With what minimum horizontal velocity
must the cliff divers leave the top of the cliff if
they are to miss the rock? Answer in units of
m/s.
Lois
One Response to “Cliff divers at Acapulco jump into the sea?”
By mlam18 on Nov 17, 2008 | Reply
s(t) = (1/2)9.8t²
30.8 = 4.9t²
t = 2.5 s
horizontal distance of 10.43 m.= vt
10.43 = 2.5 v
v = 10.43/2.5 m/s