Estimate the average force exerted by a shot-putter on a 7.0-kg shot if the shot is moved through a distance of 2.4 m and is released with a speed of 15 m/s

B) as the temperature increases, the kinetic energy of the particles increases.|-/

I'm having some difficulty seeing the diagram clearly.but the question says there's a net inward force on the object.so we know right away,  from newton's 2nd law of motion, thatthat baby is accelerating.  it doesn't even matter which way thenet force is pointing.  if there's any net force, then either theobject's speed or else its direction must be changing.