Physics, 22.07.2019 21:50 Emiann222

Which segment of this graph shows a decreasing velocity?

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The segment of this graph that shows a decreasing velocity is the EF segment. AB and DE segments show that whatever was moving, in these segments was stopped. The segment BC shows an increase in velocity - the metres travelled were always more as the time went by. The segment CD shows that the velocity was constant during this period as the metres travelled were always constant as the time went by. EF is the segment that shows a decrease in velocity - at a certain point, the metres travelled started to be less for the same period of time - for example, from 80 to 90 secs, about 15 were travelled, while for the same amount of time, from 90 to 100 secs, only about 5 metres were travelled.

Answer from: bbahena46

E and F is the correct answer

Answer from: Quest

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 from: Quest

an energy transformation flow diagram is shown

where is it ?

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