Aprojectile is launched from the ground at an angle of 60o above the horizontal. at what point in its trajectory does it have the maximum value of acceleration? neglect air resistance. it has the maximum value of acceleration just after it leaves the ground it has the maximum value of acceleration just before it lands on the ground its acceleration is constant everywhere in its trajectory. it has the maximum value of acceleration halfway to the top of its trajectory. it has the maximum value of acceleration at the top of its trajectory.

It's constant everywhere in its trajectory.

Explanation:

the projectile was launched with an initial velocity, the only acceleration that is affecting the projectile's velocity is gravity.

The acceleration of gravity is practically equal everywhere on earth, so during its trajectory, we have to take into consideration only the acceleration because of gravity.

This is only correct because the projectile was launched with an initial velocity and it's not accelerating from rest and then falls.

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