A450 kg piano is being unloaded from a truck by rolling it down a ramp at 22 degree inclined . there is negligible friction and the ramp is 11.5 m long . two workers slow the rate at which the piano moves by pushing with a combined force of 1420n parralel to the ramp . i f the piano starts fromm rest . how fast is it moving at the

To solve this problem we will apply the linear motion kinematic equations, and force related equations in Newton's second Law.

Our values are given by:

Through equilibrium we know that the Force coming from the vertical weight component minus the Force exerted on the body must be equal to the total Force (Mass and acceleration). So,

Applying the kinematic equations of motion in which the velocity is described by the change in acceleration and position we have

Therefore the Speed at the bottom is 3.44m/s

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

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h o h o hope you have a merry christmas!

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