Aprojectile of mass 0.75 kg is shot straight up with an initial speed of 18 m/s. a) use the work-energy theorem to calculate the maximum height of the projectile under the assumption of negligible air resistance. now consider the same projectile, under the same assumption of negligible air resistance, instead shot at 18 m/s at an angle above the horizontal. b) will the new maximum height be greater than, less than, or equal to the height calculated in (a)? justify your answer. e) define k, as the kinetic energy of the projectile at its highest point when launched straight up; define k2 as the kinetic energy of the projectile at its highest point when launched at angle d which is larger? choose one and justify your answer. ok is equal to k which is greater depends whether the angle of launch is greater or less than 45 ) when the experiment is actually performed by shooting the projectile straight up, the projectile rises to a maximum height of only 12 m. i. is the absolute value of the work done by air resistance greater ii. calculate the average force of air resistance on the ball than, less than, or equal to the initial kinetic energy of the projectile? justify your answer.