A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is
Options
A. 70 m/sec.
B. 75 m/sec.
C. 80 m/sec.
D. 85 m/sec.
E. 90 m/sec.
Correct Answer
90 m/sec.
More questions
1. The detention time of a circular tank of diameter d and water depth H, for receiving the sewage Q per hour, is
Correct Answer: bears a constant ratio to their velocity of approach
3. If the unit weight of sand particles is 2.696 g/cc. and porosity in loose state is 44%, the critical hydraulic gradient for quick sand condition, is
8. If R and T are rise and tread of a stair spanning horizontally, the steps are supported by a wall on one side and by a stringer beam on the other side, the steps are designed as beams of width