4. Two students are discussing the gravity forces that affect a small rock (m= 3 kg) and a car (m = 1000 kg). They watch the two objects fall at the same rate. Student 1: "Both the rock and the car fall at the same acceleration, g = 9.8 m/s. So they must feel the same amount of gravity force. Student 2: "But more mass means more inertia. You need more force to affect a heavier object, so the car must feel a bigger gravity force than the rock." Do you agree or disagree with either or both of the students? Explain why.

4. Two students are discussing the gravity forces that affect a small rock (m= 3 kg) and a car (m = 1000 kg). They watch the two objects fall at the same rate. Student 1: "Both the rock and the car fall at the same acceleration, g = 9.8 m/s. So they must feel the same amount of gravity force. Student 2: "But more mass means more inertia. You need more force to affect a heavier object, so the car must feel a bigger gravity force than the rock." Do you agree or disagree with either or both of the students? Explain why.