To begin your activity, open this tracker experiment: Snowboard Jump Energy. Watch the movie by clicking on the play button. (The other video controls allow you to “rewind” the video or step forward or backward one frame at a time.) Observe the video and answer the following questions.

Part A
What can you say about the snowboarder’s kinetic energy as he moves?

Part B
Similarly, what can you say about the potential energy of the snowboarder?

Part C
Based on your observations, what can you say about your prediction in Parts A and B above concerning the potential and kinetic energy?

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

double the distance = divide strength by 4

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.