In the absence of air drag, why will a rock and a pebble accelerate equally when dropped?
What will be an ideal response?
They accelerate equally because the ratio of force to mass, F/m, is the same for both. This ratio is the acceleration, in accord with Newton's Second Law.
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Critical Thinking
Consider the accompanying diagram. Do you think it is more likely that more renewables will be used proportionally in the future as energy inputs, or that less of the output will be waste? Why or why not?
What will be an ideal response?
Which nation has transformed itself from an entrepôt into a major nexus for banking, communications and biotechnological research?
A) Laos B) Vietnam C) Malaysia D) Singapore E) Philippines
In 1994, scientists witnessed a major impact on a planet, which was a sober reminder that Earth-crossing comets and asteroids pose a serious threat to life on Earth. On which of the following planets did this impact occur?
A. Jupiter B. Pluto C. Saturn D. Mars E. Neptune
What was the Green Revolution, and what impact did it have on developing countries? Discuss the impact of the Green Revolution on the environment
What will be an ideal response?