Ineed with two questions in physics. 1. a powerful rocket accelerates at a rate of 50m/s and a mass of 200,000 kg. what is the force required to make this happen? 2. a tennis player applies an average 10n force to a 0.05 kg ball, what is the acceleration of the ball?

What happens to light waves from a star as the star moves away from earth?

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)