Q7.5 1/1 point (graded) You are pushing a loaded grocery cart across a parking lot in a strong wind. To make it undergo a displacement in a straight line, given by As, you have to apply a constant force F to the cart. F= 34N 2-56 N 3 43 = - 8.11 m 2 - 4.04m 3 How much work does the force you apply do on the grocery cart? Enter your answer in Joules ([J]). -49.5 V -49.5 Q7.6 4/4 points (graded) Y Start x Finish® C A b A 1.0 kg object is moved part way around a triangular path as shown, starting at the top. The triangle has sides a = 2.0m, b = 1.7 m, and c = 1.0m. The angle or is therefore 30°, The final position is 0.5 m lower than where it started. How much work has gravity done on the object during its journey? Calculate the contribution from each side and the total work done (use g = 9.8m/s2 ). Contribution from side a: Enter your answer in Joules ([J]). 9.8 V 9.8 Contribution from side b: Enter your answer in Joules ([J]). 0 V 0 Contribution from side c: Enter your answer in Joules ([.]]]. -4.9 V -4.9 Total work done: Enter your answer in Joules ([3]). 4.9 V 4.9