A railroad train travels forward along a straight track at 90.0 m/s for 1 000 m and then travels at 70.0 m/s for the next 1 000 m. What is the average velocity?
a. 79.3 m/s
b. 78.8 m/s
c. 83.8 m/s
d. 75.8 m/s
e. 81.5 m/s
b
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A toy rocket is launched vertically from ground level at time t = 0.00 s. The rocket engine provides constant upward acceleration during the burn phase
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Fill in the blank(s) with correct word