A 5.00 kg object has a moment of inertia of 1.20 kg 
What torque is needed to give the object an angular acceleration of 2.0 
A. 2.4 N•m
B. 2.6 N•m
C. 2.8 N•m
D. 3.0 N•m
E. 3.2 N•m
A. 2.4 N•m
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A super train is moving along a track at a speed close to the speed of light. You are watching the train from the ground. You observe lightning to strike in two places along the track, a mile apart, at precisely the same time
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Galileo's early telescopes revealed the four large moons of Jupiter, the rings of Saturn, and its large moon Titan
Indicate whether the statement is true or false
A ball is thrown straight up with an initial speed of 30 m/s. What is its speed after 4.2 s?
A. 72 m/s B. 42 m/s C. 30 m/s D. 11 m/s