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Conceptual Questions


Compare the way advocates of the impetus theory and the way Galileo accounted for the motion of a body moving at constant speed in a given direction.

What would Kepler have considered to be the path of a planet if it were influenced by the anima motrix but was not affected by the magnetism of the Sun?

In what sense does an orbiting satellite accelerate even if its speed remains constant?

Two forces, oppositely directed, act on a body. The force acting toward the right is twice as strong as the force acting toward the left. Describe the motion of the body.

Suppose a person is stranded on a frozen lake of perfectly smooth (frictionless) ice. Think of a method for the person to use to reach the shore of the frozen lake.

Suppose that a satellite is given a speed 10% larger than circular velocity. What would be the shape of the trajectory of the body?

The tidal force that the Earth exerts on the Moon is stronger than that exerted by the Moon on the Earth. Explain why this is so.

The tidal acceleration due to the Moon is twice as large as the tidal acceleration due to the Sun. Show how this leads to a total tidal acceleration about three times as large for spring tides as for neap tides.

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