Which statement is true about Newton's first law of motion?
a. It was completely invented by Newton.
b. It was an addition to and improvement of Galileo's observations.
c. It was just a better way to state what Galileo had learned a long time before.
d. It restated the ideas of Aristotle.
e. Newton, according to legend, formulated it upon seeing an apple fall to the ground.
b
You might also like to view...
Water in a tightly closed flask evaporates at a rate of 0.00038 lbm/hr. Estimate the specific humidity of the air 1 inch above the liquid water-air surface if the dry bulb temperature is 70ºF. The water-air surface is 3 in^2.
What will be an ideal response?
Zero degrees on the Celsius scale
corresponds to what reference point? a)the ice point b)the steam point c)absolute zero d)212 degrees Fahrenheit
Alice is floating freely in her spacecraft, and you are accelerating away from her with an acceleration of 1g. Suppose you claim that you are feeling the effects of a gravitational field. How can you explain the fact that Alice is weightless?
A) She is weightless because she is moving at constant velocity. B) She is weightless because she is in a not moving. C) She is weightless because she is in free-fall. D) If you are in a gravitational field, then she cannot be weightless.
Sunspots
a. are cooler than their surroundings. b. are regions where material is rising from below the photosphere. c. are the result of convection. d. produce spicules. e. are generally found near the poles of the Sun during sunspot maximum.