estion 10
small balls, attract each ot
7.5 pts
a gravitational force of magnitude F. If we now double both masses and the separation of the balls, what
now be the magnitude of the attractive force on each one?
8F
F
4F
16F
Question 11
7.5
An elevator is moving upward with a speed of 11 m/s. Three seconds later, the elevator is still moving upward, but its speed has been reduc
o 5.0 m/s. What is the average acceleration of the elevator during the 3.0 s interval?
O 2.0 m/s², upward
5.3 m/s², upward
2.0 m/s², downward
5.3 m/s², downward
Question 12