Ganymede is one of the many moons of jupiter. it is nearly spherical in shape. it is larger than the planet mercury and slightly smaller than the planet mars. if it is so large compared with the bodies around it, why is it called a moon and not a planet?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2.