Ch-5 physics test
which of the following energy forms is associated with an objects due to it's position?
potential energy
which of the following is the rate at which energy is transferred?
power
which of the following parameters does not express how resistant a spring is to being compressed or stretched?
spring constant
work is done when
the displacement is not zeero
if the only force acting on an object is friction during a given physical process. which of the following assumptions...... ?
the kinetic energy decreaces
deep hole one
the potential energy decreases
the more powerful the motor is,
the shorter the time interval for doing the work is
a child moving at a constant velocity carries a 2N ice-cream cone 1m across a level surface. What is the net work done on the ice cream cone
2 J
which of the following energy form is NOT involved in hitting a tennis ball?
chemical potential energy
which form of energy is involved in weighing fruit on a spring scale?
elastic potential energy
which of the following energy forms is involved in winding pocket watch?
elastic potential energy
which of the following energy forms is stored in any compresses or stretched object?
elastic potential energy
which of the following energy forms is associated with an object's interaction with the environment?
potential energy
which of the following equations is NOT an equation for power?
P=Fv/triangle.t
what is the common equation for work?
W = Fd
the equation for determining gravitational potential energy is PE = mgh. which factor(s) in this equation is (are) NOT a property of an object?
both d and h
which of the following energy forms is associated with an object due to its position relative to earth?
gravitational potential energy
which of the following energy forms is involved in a pencil falling in a desk?
gravitational potential energy
a force does work on an object if a component of the force
is parallel to the displacement of the object
which of the following energy forms is associated with an objects motion?
kinetic energy
the main difference between kinetic energy and potential energy is that
kinetic energy involves motion and potential energy involves position
why doesn't the principle of mechanical energy conservation holds in situations when frictional forces are present?
kinetic energy is not simply converted to a form of potential energy
which if the following energy forms is the sum of kinetic energy and all forms of potential energy?
mechanical energy
which of the following are examples of conservable quantities?
mechanical energy and mass
in the presence of frictional force,
non-mechanical energy is negligible and mechanical energy is conserved
