You are asked to design spring bumpers for the walls of a parking garage. a freely rolling 1200 kg car moving at 0.70 m/s is to compress the spring no more than 7.2×10−2 m before stopping. what should be the force constant of the spring? assume that the spring has negligible mass.

Explain the consequences of this addiction to the brain tissue

The particles that are found in the nucleus of an atom are

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