A test rocket is fired straight up from rest with a net acceleration of 20.0 m/s2. After 4.00 seconds the motor turns off, but the rocket continues to coast upward with no appreciable air resistance. What maximum elevation does the rocket reach?
A) 487 m
B) 327 m
C) 320 m
D) 408 m
E) 160 m
A
Physics & Space Science
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The current in amperes drawn by the heater is
a. 0.1 c. 144,000 b. 10 d. none of the above
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What is the Q of the reaction 
The rest mass of the proton is 938 MeV/c2 and of the neutral point is 135 MeV/c2
A. 187 MeV B. 135 MeV C. 938 MeV D. -187 MeV E. -135 MeV
Physics & Space Science
Conversion of Units: A jar of peanut butter costs $3.29. Express its price in dekadollars and decidollars.
A. 0.329 dekadollars; 0.329 decidollars B. 32.9 dekadollars; 0.329 decidollars C. 329 dekadollars; 32.9 decidollars D. 0.329 dekadollars; 32.9 decidollars E. 32.9 dekadollars; 329 decidollars
Physics & Space Science
Internal forces cannot change the total momentum of a system
Indicate whether the statement is true or false
Physics & Space Science