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Question 1 (1 point) A race car is driving around a circular track. In what direction is the centripetal force on the car pointing? Directly ahead of the car Directly behind the car Vertically upward Vertically downward Toward the center of the circular track Away from the center of the circular track
Question 2 (1 point) An object is traveling in a circle of radius r at a constant speed v. Its acceleration is a₁. Another object travels in the same circle at twice the speed of the first object. Its acceleration is a2. What is the value of the ratio a2/a₁? 4 2 1 01/2
Question 3 (1 point) ✓ Saved True or false: friction can be a centripetal force True False Question 4 (1 point) A satellite is in a circular orbit around a planet. The radius of its orbit depends on (check all that apply) the mass of the planet the mass of the satellite the speed of the satellite the physical size of the satellite the density of the planet