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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In terms of axial tilt, which of the jovian planets shows us the largest inclination?
A) Pluto B) Neptune C) Saturn D) Jupiter E) Uranus
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
At the instant of engine burnout, the rocket has risen to 64 m and acquired an upward velocity of 60 m/s. The rocket continues to rise with insignificant air resistance in unpowered flight, reaches maximum height, and falls back to the ground. The time interval during which the rocket engine provided the upward acceleration, is closest to A) 2.1 s. B) 2.3 s. C) 1.9 s. D) 1.7 s. E) 1.5 s.
Graphite, diamond, and buckminsterfullerene are different forms of the element _______
Fill in the blank(s) with correct word
What do we call a small piece of solar system debris found on Earth?
A) solar system debris B) cometary fragment C) meteor D) meteorite E) meteoroid