9. If a bail is dropped in a vacuum chamber, it will acquire a A. variable speed
ID: 776481 • Letter: 9
Question
9. If a bail is dropped in a vacuum chamber, it will acquire a A. variable speed B. constant speed C. variable acceleration D. constant acceleration 10. Two objects are suspended using a frictionless pulley. The masses of the two objects are M and Ms and MMr. If the lighter object possesses a mass of 2.00 kg and it rises with an acceleration of 5.00 m/s, what is the mass of object? A. 2.16 kg ic B. 4.26 kg C. 6.16 kg D. 8.26 kg m2 An object is pulled up by a rope from an elevator travelling upward with an acceleration of 1.4 m/s. The tension in the rope is 30 N. What is the weight of the object? A. 2.6 kg 11. .4ml ! B. 3.6 kg C. 4.6 kg D. 5.6 kg 12. Train A moves with a velocity of 172 km/h. Train B moves in the opposite direction with a velocity of 130 km/h. For a passenger sitting in the train A, the velocity of train B will seem to be A. 142 km/h B. 160 km/h C. 272 km/h D. 292 km/hExplanation / Answer
9. (D)Constant acceleration
Constant acceleration is because of gravitational pull, in vaccume there is no resistance of air, so, only force is of gravity.
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