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## Aaron from Hackettstown, NJ's Resources

A stone is dropped from a captive balloon at an elevation of 1000 ft (304.8 m). Two seconds later another stone is thrown vertically upward from the ground with a velocity of 248 ft/s (75.6...

A ball is dropped from the top of a tower 80 ft (24.38 m) high at the same instant that a second ball is thrown upward from the ground with an initial velocity of 40 ft/s (12.19 m/s). When do they...

A stone is thrown vertically upward and return to earth in 10 sec. What was its initial velocity and how high did it go? (Ans. 49.05 m/s, 122.625 m; 161 ft/s, 402.5 ft)

4. On a certain stretch of track, trains run at 60 mph (96.56 kph). How far back of a stopped train should be a warning torpedo be placed to signal an oncoming train? Assume that the brakes are applied...

A hot-air balloon is ascending at the rate of 10 kph. If a bomb is dropped from the balloon such that it takes 8 seconds to reach the ground, determine the balloonâ€™s altitude when the bomb was...