A watermelon has a mass of 9.0 kg on the moon where the acceleration due to gravity is 1.67 m/s". What would the watermelon's weight be if it were on Earth? Select one: O a. 9.ON O b. 9.8 N O C. 15 N O d. 88 N If the gravitational force exerted by the sun on Earth were to suddenly disappear, Earth would then travel in a straight line on a path Select one: O a. toward the centre of the sun parallel to the radius of its original orbit O b. perpendicular to the plane of its original orbit O c. away from the centre of the sun parallel to the radius of its original orbit O d. perpendicular to the radius of its original orbit What force must be supplied if a mass of 0.035 kg is revolved at a speed of 5.38 m/s and the radius of curvature is 0.55 m? Select one: O a. 18 N O b. 53 N O C. 0.34 N O d. 10 N He hypothesized that planets moved in ellipses, not in circles. Select one: O a. Galileo O b. Kepler O c. Newton O d. Ptolemy