Mrs. buckley asked her physical science class to look at the graph and tell which of the following explanations are most likely true.
option a: from 12 to 24 minutes the bicyclist was coasting down a hill.
option b: at 35 minutes the bicyclist was not moving.
option c: from 6 to 12 minutes the bicyclist was increasing his speed.
option d: from 24 to 30 minutes the bicyclist was traveling down a steep hill. question 8 options:
all of the options are most likely true.
only option c is true.
option a and b are true.
option c and d are true.
the correct answer is:
consideration is defined as the act of thinking something carefully, careful thought; meditation; deliberation. consideration acts like filter on the information a person receives, because it allows them to contemplate the implications of something before acting on it.
when neglecting air resistance or frictions, the mechanical energy of an object in motion is conserved.
mechanical energy is defined as the sum of potential energy (u) and kinetic energy (k):
at the highest point of its swing, the pendulum has only potential energy (because its motion has stopped), therefore its mechanical energy at the highest point is:
on the contrary, at the lowest point of its swing, the pendulum has only kinetic energy, because it is a its lowest height, so the potential energy is zero, and all the mechanical energy is just kinetic energy:
and since for the conservation of energy e must be conserved, we have
so, the kinetic energy at the bottom of its swing is 592 j.
what he said gfgggdf