# Mechanical Engineering Objective Questions { Engineering Mechanics }

176. A body is thrown vertically upwards with a velocity of 980 cm/sec then the time the body will take to reach the ground will be

177. A body is thrown vertically upwards from the ground with a speed of 980 cm/sec. It will rise to a height of

178. A stone falls from the top of a building 200 m high and at the same time another is projected vertically upwards with a velocity of 50 m/sec, then the two will meet

179. A ball is dropped vertically downward from the top of a building and another one is thrown horizontally. Which will strike ground first

180. A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of velocity after rebounding

181. A 6 m long rope of weight 0.5 kg/m is hanging freely from a support. The work done in lifting up the rope upto the support point will be

182. A boatman rowing his boat at normal speed takes 12 minutes to cover 2 kilometers downstream, while rowing up stream at the same speed he takes 20 minutes to cover the same distance. The normal speed of the boat is

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