A car passes a dip in the road, going first down, then up. At the very bottom of the dip, when the car’s instantaneous velocity is passing through horizontal, how does the magnitude of the normal force on the car compare to the magnitude of the car’s weight?
A. 
B. 
C. 
D. 
E. We do not have enough information to answer.
C.
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The ancient Greek who is known for championing the concept of the atom was named ______________
Fill in the blank(s) with correct word
Based on the idea of "spaceship Earth," write one or two paragraphs explaining why it is not the case that we are "just sitting here."
What will be an ideal response?
Which of the following statements about the strong nuclear force are correct? (There may be more than one correct choice.)
A) It acts equally on protons and neutrons but not on electrons. B) It acts equally on protons, neutrons, and electrons. C) It has a much longer range than the electric force. D) It keeps electrons in their orbits around the nucleus. E) Because of its very short range, there is a limit to how large the nucleus can be.
A 1000-kg car traveling at 70 m/s takes 3 m to stop under full braking. The same car under similar road conditions, traveling at 140 m/s, takes ______________ m to stop under full braking
a. 6 b. 1 c. 3 d. 12 e. 11