A canon is tilled back 30.0 degrees and shoots a cannon ball at 155 m/s. What is the highest point that the cannon ball reaches?

Therefore, highest point that the cannon ball reaches is 168.7m

Explanation:

the cannon is fired at an angle 30 o to the horizonatal with a speed of 155 m/s

highest point that the cannon ball reaches?

g = 9.8m/s2

Therefore, highest point that the cannon ball reaches is 168.7m

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