Question

TRUE & FALSE: Write "T" or "F" in the blank. Newton's 1st law states that if an unbalanced force acts on an object, it will move at constant velocity. ___ 2) As an object moves in a circle, a centrifugal force acts on the object and pulls it outwards away from the center of the circle. _ 3) The force of gravity pulling an apple downwards and the support force from a table pushing the apple upwards constitute a pair of action-reaction forces. _ 4) In the interaction between the Earth and the Moon, the more massive Earth pulls harder on the less massive Moon. _ 5) The vertical motion of a projectile does not interfere with its horizontal motion. _ 6) An airplane will always have greater momentum than an automobile because of its greater mass. _ 7) A ball that bounces off of the wall upon collision will impart a greater impulse on the wall than a ball that sticks to the wall upon collision. _ 8) It is just as easy to open a door with the doorknob located at the center of the door than a door with the doorknob located at the edge of the door. _ 9) An elephant and a feather will fall toward the earth at the same rate in a vacuum because the gravitational force of the earth acting on the two is the same. ___ 10) Conservation of energy tells us that the total energy of any system is always conserved.

          TRUE & FALSE: Write "T" or "F" in the blank.
Newton's 1st law states that if an unbalanced force acts on an object, it will move at constant velocity.
_____ 2) As an object moves in a circle, a centrifugal force acts on the object and pulls it outwards away from the center of the circle.
_____ 3) The force of gravity pulling an apple downwards and the support force from a table pushing the apple upwards constitute a pair of action-reaction forces.
_____ 4) In the interaction between the Earth and the Moon, the more massive Earth pulls harder on the less massive Moon.
_____ 5) The vertical motion of a projectile does not interfere with its horizontal motion.
_____ 6) An airplane will always have greater momentum than an automobile because of its greater mass.
_____ 7) A ball that bounces off of the wall upon collision will impart a greater impulse on the wall than a ball that sticks to the wall upon collision.
_____ 8) It is just as easy to open a door with the doorknob located at the center of the door than a door with the doorknob located at the edge of the door.
_____ 9) An elephant and a feather will fall toward the earth at the same rate in a vacuum because the gravitational force of the earth acting on the two is the same.
_____ 10) Conservation of energy tells us that the total energy of any system is always conserved.

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