Motion in a Straight Line · Motion in a straight line
A gas balloon is going up with a constant velocity of 10 m/s. When this balloon reached a height of 75 m, a stone is dropped from it and balloon keeps moving up with the same velocity. The height of the balloon when the stone hits the ground is m. (Take )
- (1)85
- (2)150
- (3)129
- (4)125
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