arkS work in raising an object. What is the efficiency of this technology? 29. Use the graph below to determine how much work is done between: ks (a) 0 & 4.0 m (b) 4.0 & 6.0 m (c) 6.0 & 8.0 m 40 Force (N) 20 O 0 2.0 4.0 6.0 8.0 10.0 Displacement (m) 30. A child throws a 0.50 kg snowball at his friend at 12.0 m/s but the snowball lands o rKS front of his friend. The snowball is 1.3 m above the ground when it leaves the child's h (a) What is the (i) kinetic energy & (ii) potential energy of the snowball at the ti (b) What is the total energy of the snowball (i) at the time of release & (ii) just the ground? (c) What is the snowball's kinetic ene