Ms. aaron's is on a plane headed west at 930 km/hr. she walks towards the back of the plane at 10 km/hr. 1. what is the speed and direction of the plane if mrs. aarons is the point of reference? 2. what is the speed of mrs. aarons using the ground as a frame of reference? 3. another plane is traveling the same direction as the first at 930 km/hr. what is the speed of mrs. aarons relative to the other plane? 4. another plane is traveling east at 750 km/hr. what is the speed and direction of the first plane using the second as a frame of reference. 5. what is the velocity of mrs. aarons relative to the other plane in problem #4?

See below in bold.

Explanation:

1. That would be 930 -10 = 920 km/hr due West.

2.The speed of Mrs Aarons relative to the ground is 930 - 10 = 920 km/hr.

3. This would be 10 km  due East.

4.This is 930 - 750 = 180 km/hr West.

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