# Answer to Question #39010 in Mechanics | Relativity for sophia

Question #39010

A block of mass 2 kg is pulled up on a smooth incline making angle 30 degrees with horizontal . if block moves with an acceleration of 1 m/s2 , find

a) Power delivered by the pulling force at a time 4 sec after motion starts

b)average power deliverd after 4 sec the motion starts

***MY DOUBT

I am very weak in kinematics , so plz explain that the formula s=ut+1/2at^2 gives displament or distance. and if it gives displacement then it will only give the length of base of the incline and not d length of hypotenuse which if needed?

a) Power delivered by the pulling force at a time 4 sec after motion starts

b)average power deliverd after 4 sec the motion starts

***MY DOUBT

I am very weak in kinematics , so plz explain that the formula s=ut+1/2at^2 gives displament or distance. and if it gives displacement then it will only give the length of base of the incline and not d length of hypotenuse which if needed?

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