Two Stones,one of Mass M and the Other of Mass

question 8

Multiple Choice

Two stones,one of mass m and the other of mass 2m,are thrown directly upward with the same velocity at the same time from ground level and feel no air resistance.Which statement about these stones is true?

• A) The heavier stone will go twice as high as the lighter one because it initially had twice as much kinetic energy.
• B) Both stones will reach the same height because they initially had the same amount of kinetic energy.
• C) At their highest point, both stones will have the same gravitational potential energy because they reach the same height.
• D) At its highest point, the heavier stone will have twice as much gravitational potential energy as the lighter one because it is twice as heavy.
• E) The lighter stone will reach its maximum height sooner than the heavier one.

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Definitions:

Cardiac Cycle

The complete sequence of events in the heart from the beginning of one heartbeat to the beginning of the next, including systole and diastole phases.

Diastole

The phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.

Heart Chambers

The four compartments of the heart including two atria and two ventricles, involved in pumping blood throughout the body.

Cardiac Conduction System

A system of specialized muscle tissues in the heart that initiates and coordinates the contraction of the heart, regulating its rhythm.