How to calculate the slope of position time graph?

The slope of a position-time graph can be calculated as:

where

is the increment in the y-variable

is the increment in the x-variable

We can verify that the slope of this graph is actually equal to the velocity. In fact:

corresponds to the change in position, so it is the displacement,

corresponds to the change in time , so the time interval

Therefore the slope of the graph is equal to

which corresponds to the definition of velocity.

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

answer: cesare beccaria developed the classical school of criminology with from philosopher jeremy bentham

explanation: