A dock worker applies a stable horizontal force of 79.0 rm, Ask an Expert

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Q.A firefighter, 75 m away from a burning building, directs a stream of water from a ground-level fire hose at an angle of 28° above the horizontal. If the water leaves the hose at 40.3 m/s, which floor of the building will the stream of water strike? Each floor is 4 m high.

Q. A dock worker applies a constant horizontal force of 79.0 {rm N} to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 14.0 {rm m} in the first 6.00 {rm s}.What is the mass of the block of ice?

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