1. If a rock is dropped from a height and hits the ground in just 1 second, the speed at impact is 10 m/s. What would
happen to the speed if it is dropped from a higher height?
a. Its final speed would remain the same because its rate of acceleration would remain the same.
b. Its final speed would increase because the acceleration due to gravity remains the same.
c. Its final speed would remain the same because its rate of acceleration would decrease.
d. Its final speed would increase because the acceleration due to gravity would decrease.