A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2 . The ball is referred to at the two second time. The velocity is __________
Fill in the blank(s) with correct word
6 m/s
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What is the difference between velocity and speed?
A. There is no difference, they are both vectors. B. Speed is a scalar and velocity is a vector. C. Speed is a vector and velocity is a scalar. D. There is no difference, they are both scalars.
The ultimate fate of our Sun is to ________
A) become a white dwarf that will slowly cool with time B) become a rapidly spinning neutron star C) become a black hole D) explode in a supernova
Why are the halo stars distributed spherically instead of throughout the disk?
What will be an ideal response?
A light ray in air is incident on an air-to-glass boundary at an angle of 30.0° and is refracted in the glass at an angle of 16.7° with the normal. Find the index of refraction of the glass
a. 1.74 c. 1.23 b. 1.40 d. 2.13