A person standing near the edge of a cliff 290 feet high throws a rock upward with an initial speed of 80 feet per second. The height of the rock above the lake at the bottom of the cliff is a function of time:

Find the velocity of the rock when t = 7 seconds.
A) -72 inches per second
B) 66 feet per second
C) -144 feet per second
D) -72 feet per second

Question

A person standing near the edge of a cliff 290 feet high throws a rock upward with an initial speed of 80 feet per second. The height of the rock above the lake at the bottom of the cliff is a function of time:

Find the velocity of the rock when t = 7 seconds.

Find the velocity of the rock when t = 7 seconds.
A) -72 inches per second 
B) 66 feet per second 
C) -144 feet per second 
D) -72 feet per second

Quizplus · Accepted Answer

The Answer of A person standing near the edge of a cliff 290 feet high throws a rock upward with an initial speed of 80 feet per second. The height of the rock above the lake at the bottom of the cliff is a function of time:

Find the velocity of the rock when t = 7 seconds.
A) -72 inches per second 
B) 66 feet per second 
C) -144 feet per second 
D) -72 feet per second

A Person Standing near the Edge of a Cliff 290