An astronaut on the planet Zircon tosses a rock horizontally with a speed of 6.90 m/s . The rock falls through a vertical distance of 1.50 m and lands a horizontal distance of 8.95 m from the astronaut. Required:
What is the acceleration of gravity on Zircon?

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2