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- A body is projected into air with a velocity (3^i+4^j+5^k)m/s. Taking X−Y plane as base and Z axis as vertical, the range of projectile (g=10m/s2)
- A train covered a certain distance at a uniform speed. If the train would have been 10 km/h faster, it would have taken 2 hours less than the scheduled time. And, if the train were slower by 10 km/h; it would have taken 3 hours more than the scheduled time. Find the distance covered by the train.