A 10.00-kg projectile, initially at rest is fired with a force of 7.1 N at an angle of 45.0° with the horizon on the surface of the earth,

Question

A 10.00-kg projectile, initially at rest is fired with a force of 7.1 N at an angle of 45.0° with the horizon on the surface of the earth,. Neglecting any effects of air resistance, what is the magnitude of the force exerted on the projectile when it is at the highest position in its trajectory? 

  98.0 N

 

  7.1 N

 

  9.8 N

 

  69.3 N

 

  0 N

 

Answer 1

This is simple. The only force after being fired is the weight mg = 98 N.