Q2 of 19 Page 116

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The suitcases kept in a moving bus, move forward when the brakes are applied suddenly. This is due to ______.

The suitcases kept in a moving bus, move forward when the brakes are applied suddenly. This is due to Inertia.

Explanation: Inertia of a body is the resistive force which opposes its motion. For instance, in this case the suitcase is moving with a velocity with the bus, but as bus stops the inertia will tend to remain that object in continuous motion. That is why the suitcase will move forward.


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To cause acceleration in an object the necessary factor is unbalanced_____ .

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Newton’s first law of motion is also called law of ________________.

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Answer the following

In a tug of war game, if the two teams exert equal forces, none of the teams win. Why?

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Answer the following

Which of the following has greater momentum?


a. An object of mass 2 kg moving with uniform velocity of 2 ms-1.


b. An object of 1 kg mass moving with uniform velocity of 3 ms-1.