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David Gia
Questions and answers by visitors named
David Gia
Questions (5)
A 67 kg astronaut (Jeff), an 88 kg astronaut (Brett) and a 17 kg rock are tied together by a light rope during a space walk. The
1 answer
412 views
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of v = 4.7 m s-1,
1 answer
504 views
Total mechanical energy of a flying rubber ball is 1692 J. It has a mass of 0.86 kg, and it is 8 m above the ground. Find the
1 answer
393 views
A skier travelling at 13 m s-1 reaches the foot of a steady upward 14° incline and glides 18 m along this slope before coming
1 answer
448 views
Calculate the power required of a 1230 kg car as it climbs a 18° hill at a steady 92 km h-1. The total friction and air
1 answer
394 views
