Question
An object of mass ‘m’ be made to fall freely from a
height ‘h’. At the start the potential energy is _____ and kinetic energy is ______.Solution
At the start of the free-fall of an object, the potential energy is mgh and kinetic energy is zero.
Find the total distance covered by boat in each upstream and downstream in 4 hours if the speed of boat in still water and speed of current is 15 km/h a...
The speed of the boat upstream and downstream are in the ratio of 3:4. If the boat covers a distance of 147 km in still water in 7 hours, determine the...
A man rows a boat a certain distance downstream in 9 hours, while it takes 18 hours to row the same distance upstream. How many hours will it take him t...
The speed of the stream is 14 km/h. Boat ‘A’ covers 130 km distance against the stream in 5 hours and boat ‘B’ covers 100 km distance against th...
Calculate the speed of a boat in still water if it travels 176 km downstream in 11 hours and returns 144 km upstream in 18 hours.
A boat covers a certain distance upstream in 6 hrs and comes back to starting point with current in 3 hrs, If boat's upstream speed is 15 km/hr, then, f...
A boat covers 36 km downstream in 2 hours, and it takes 3 hours to cover the same distance upstream. What is the speed of the current?
The speed of the stream is 12 km/h. Boat ‘A’ covers 120 km distance against the stream in 6 hours and boat ‘B’ covers 120 km distance against th...
The speed of the stream is 12 km/h. Boat ‘A’ covers 100 km distance against the stream in 5 hours and boat ‘B’ covers 80 km distance against the...
A boat travels from point 'T' to point 'S' downstream and returns upstream in a total of 32 hours. The speed of the boat in upstream is three times the ...
