9. A 1.3 kg ball after rolling down a ramp shoots off the edge of a table with a horizontal velocity of 1.2 m/s. The table is 1.5 m high. a) Draw the trajectory of the ball b) Determine how far from the edge of the table does the ball land. c) Determine how long was the ball in the air. d) Determine the velocity of the ball just before impact. e) Determine the Potential Energy of the ball at the top of the table. f) According to the law of conservation of energy, determine the Kinetic Energy of the ball at the bottom of it's trajectory.

Why do astronauts in the space shuttle weigh less?

Learning goal: to understand newton's 1st law. newton's principia states this first law of motion: an object subject to no net force maintains its state of motion, either at rest or at constant speed in a right line. this law may be restated as follows: if the sum of all forces acting on an object is zero, then the acceleration of that object is zero. mathematically this is just a special case of the 2nd law of motion, f⃗ =ma⃗ , when f⃗ =0. when studying newtonian mechanics, it is best to remember the 1st law in two ways: if the net force (i.e., sum of all forces) acting on an object is zero, the object will keep moving with constant velocity (which may be zero). if an object is moving with constant velocity, that is, with zero acceleration, then the net force acting on that object must be zero. complete the following sentences to see if you can apply these ideas. part a if a car is moving to the left with constant velocity, one can conclude that

2) why do satelites not fall while revolving around the earth?