Mars has twice the mass of Mercury and is 4 times further away from the Sun. Calculate theratio of the gravitational force from the Sun on Mercury to the gravitational force from the Sunon Mars.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Suppose an objects initial velocity is 10m/s and it’s final velocity is 4 m/s. mass is constant. what can best be concluded about the object based in the work-energy theorem

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?