A Steel marble with a mass of .020 Kg is fired at an angle of 45 degrees from the marble launcher. If the acceleration of the marble is 5.6 m/s2, What was the force in Newton's applied to the marble?

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

There are two routes similar in terrain; however, one route has an incline of approximately 28 degrees, and you must decide on which route to take. what is the maximum road grade that your fully loaded ecv can climb?

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34