An object is dropped from the edge of a cliff and is moving at 26.5 m/s just before it hits the ground. how high is the cliff?
11.0 m
260 m
35.8 m
848 m

  35.8 m

Explanation:

An appropriate formula is ...

The initial velocity is 0, and the acceleration due to gravity is 9.8 m/s², so the distance, d, is ...

given data:

determine the horse power (h.p) = ?

force applied to move the box(f) = 10 pounds,

box lifted from a distance         (d) = 3 feet

time taken to lift                         (t) = 10 sec,

the horse power is defined as amount of work required to move a load. the horse power is equal to 550 foot-pound per second

                  1 h.p   = 550 foot-pound/second

it can also be defined as the the load that need to be move a body for certain distance in a certain amount of time.

mathematically,

                      h.p = (force × distance)/ time

                            = (10 × 3)/ 10

                            = 30/10

                            = 3 foot -pound/sec

hence, the horse power is needed to move the box is 3 foot-pound/second

important note: 1 h.p = 550 foot-pound/second = 746 watts

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