Two baseballs are released at the same time. One is dropped from rest and the other is given an initial horizontal velocity. Which of the following is not true? Ignore atmospheric drag
a. Both baseballs hit the ground at the same time.
b. Both have the same vertical component of velocity as they reach impact.
c. The horizontal component of velocity increases at a greater rate than the vertical component of velocity for both while they are both in the air.
d. The horizontally-released ball has a greater speed than the other ball for the whole trip.
C
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a. It is based on the ideas of the smartest people. b. It is based on a model of nature. c. It is based on observations. d. It is tested through prediction and experiments.
Which of the following is a prototype of a new class of objects defined by the International Astronomical Union (IAU) as dwarf planets?
A) Pluto B) Uranus C) Titan D) Triton
Size of the Nucleus: How many nucleons would you expect a nucleus to contain if its diameter is 13.4 fm?
Fill in the blank(s) with the appropriate word(s).
In the figure, an airport luggage-carrying train with a tractor T is pulling three luggage carts, src="https://sciemce.com/media/4/773b8b498cf934ef13.png" class="w-image" /> and cart 
and 
with an acceleration of 1.2 
If T = 300 kg, 
= 200 kg, 
= 100 kg, and 
= 100 kg, then the force in the connection between cart 
is
A. 840 N.
B. 480 N.
C. 240 N.
D. 120 N.
E. 0 N.