Question

Question 17:
To take the boat away from the bank of a river, the boatman pushes the bank with an oar. Why ?

Lakhmir Singh Physics Class 9

Answer 1

Answer:

To take the boat away from the bank of a river, the boatman pushes the bank with an oar - as he pushes the bank with his oar he creates an action force ,in return to this action force the bank of the river gives a reaction force

(according to Newton's third law)thus the equal but opposite force causes the boat to move away from the bank

Answer 2

The harder the boatman moves the water back with oars, the force produced by the water is stronger and the boat goes forward faster.

Explanation:

• The boatman moves the water back with the oar while paddling the boat so that the water falls on the boat similarly and reverse, which allows the boat go forward.
• In fact, the harder the boatman moves the water back ( reverse ) with oars, the force produced by the water is stronger and the boat goes forward faster.

Forward :-  In the way one faces or travels; to the front;

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