A 0.5-kilogram soccer ball is kicked with a force of 50 newtons for 0.2 seconds. The ball was at rest before the kick. What is the speed of the soccer ball after the kick?

speed of a ball after the kick was 20m/s

Explanation:

before the kick the velocity of a ball was zero due to that the ball had maximum potential energy, after the kick a ball accelerated by gaining kinetic energy there fore it moved with a speed v that is calculated from,

impulse(force x time)=mass x (V-U)

but U=0

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