Gravitational force of attraction f exists between two masses A and B when theya re separated by a fixed distance. If the distance between the masses is quadrupled the gravitational attraction between the two masses will be _____ times its original value
1/16
Force and acceleration arrows always point where?
towards the center of the circle
If the speed of the car were doubled, the centripetal acceleration of the car would be
doubled
If additional passengers were riding the car, at the original speed, the car's centripetal acceleration would be ____
same
If the radius of the track were doubled the centripetal force would be ___
cut in half
What provides centripetal force when a car goes around a curve
Friction
What provides CF when the moon orbits the Earth
Gravity
What provides CF when you whirl a rubber stopper on a string
tension
Velocity vectors always point where
the outside of the circle
Why do Astronauts "float" in space? Is it because there is no gravity
No, its because they are in freefall because they are falling at the same rate as the Earth
What force is used on a free flying object
there is none
why is there no force on a free flying object
inertia