Answer Happy

D Question 18 • According to Galileo, the acceleration of a freely falling object due to gravity is O the same regardless of the mass and the height from which it is dropped O smaller if the object is dropped from a greater height O larger if the mass of the object is larger O larger if the object is dropped from a greater height O smaller if the mass of the object is larger Question 19 • Newton concluded that some force must act on the Moon because______ O the Moon has at a constant velocity O a force is needed to keep the Moon in motion O a force is needed to pull the Moon outward O a force is needed to pull the Moon away from straight-line motion O the Moon has a constant acceleration Question 20 02 09 O 36 4 pts 03 4 pts • Gravity obeys the inverse square law (given by the Gravitational Force equation on last page), which implies that the gravitational force one body on another will be times stronger at two meters than at four meters apart. 4 pts
Question 21 • A(n) orbit is one where the orbiting object is always above the same location on Earth's surface. O closed Ohyperbolic O geosynchronous O parabolic O elliptical Question 22 • The circular velocity of a satellite orbiting Earth is given by the equation for vc, as seen in the front page. In this equation, M and r represent the: Omass of the satellite, and r its radius O mass of the satellite, and r the distance from Earth's center to the satellite O mass of Earth, and r the radius of Earth O mass of Earth, and r is the distance from Earth's surface to the satellite O mass of Earth, and r the distance from Earth's center to the satellite Question 23 • Newton's law of mutual gravitational force states that...... O the force between two objects is directly proportional to the product of their masses and inversely proportional to the distance between them squared O for every action, there is an equal and opposite reaction O an object with no force on it moves in a straight line with constant acceleration O an object with no force on acting on it continues at rest or moves in uniform motion in a straight line with constant velocity O an object with a force on it is accelerated in the direction of the force an amount inversely proportional to its mass and directly proportional to the size of the force 4 pts 4 pts 4 pts