Ablock of 5 kg moves with v = 6 m/s on a horizontal surface without friction, addressing a spring whose constant elastic is equal to 400 n/m and having one of its ends attached to a wall. the mass of the spring is negligible.
a) the maximum distance that the spring can be compressed.
b) if the maximum distance that the spring could be compressed was 0.150 meters, what would be the value of v?

The ballistic pendulum was invented in 1742 by english mathematician benjamin robins. it consists of an initially stationary pendulum that moves after being struck by a bullet, and it is used to measure the original velocity of the bullet. the known variables are the bullet's mass m, the pendulum's mass m, and the height to which the block and bullet swing, determined by the length of the pendulum l and final angle θ. two principles of physics are necessary to solve for the bullet's original velocity. what are these principles? conservation of momentum and newton's third law conservation of energy and conservation of angular momentum grade summary deductions 0% potential 100% conservation of momentum and newton's second law. newton's second law and conservation of angular momentum. conservation of energy and newton's third law conservation of momentum and conservation of angular momentum. conservation of momentum and conservation of energy conservation of energy and newton's second law.

An observer that stands still as the electron moves by him, will observe

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?