A 10kg cannon ball in flight with a speed of 50 m/s in the positive x direction explodes into 3 pieces. A 2.5kg piece goes off at an angel of 30 degrees to the positive x axis with a speed of 60m/s and 4.5kg piece goes off an angle of -45 degrees to the x axis with a speed of 75m/s. what is the mass, velocity and momentum of the third piece? can i have an explaination

i don't know that i agree with that but what's the question ?

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

the components of a vector are the parts of the vectors that are to each other.

b perpendicular