A rocket is launched from the origin with an acceleration of 20.0 
at an angle of 30.0 degrees above the horizontal. The launch acceleration lasts for 2.00 seconds at which time the fuel is exhausted. The rocket then falls with an acceleration of 9.80 
downward. What is the maximum velocity in the upward direction?
A. 20.0 m/s
B. 25.0 m/s
C. 30.0 m/s
D. 35.0 m/s
E. 40.0 m/s
A. 20.0 m/s
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What is the point where the Earth is furthest away from the Sun?
A. aphelion B. solstice C. perigee D. full moon. E. perihelion
Wendy walks 10 m in one direction at 2 m/s, then runs 6 m in the same direction at 6 m/s. Next, she stops for 4 seconds, and finally walks in the opposite direction at 4 m/s for 6 seconds
Wendy's average speed is closest to:
1.½ m/s 2.1 m/s 3.1½ m/s 4.2 m/s 5.2½ m/s 6.3 m/s 7.3½ m/s 8.4 m/s 9.the negative of one of the choices above 10.impossible to determineWhat happens to the nucleus as a result of gamma radiation?
a. A change in state to the ground state, if possible. b. An increase in atomic mass. c. An increase in the atomic number. d. A change in state to a higher energy state. e. A decrease in the atomic number.
Halley's Comet returns about every ______________ years
Fill in the blank(s) with correct word