Which of the following is not an example of projectile motion?
Correct answer A. a gas filled ballon
Tip: press A, B, C or D to answer, and N for the next question.
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See allThe acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be?
Correct answer B. 1
A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10?
Correct answer A. 14 m
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Which law of motion is also called law of inertia?
Correct answer A. 1st law
Why Ballistic missile fails in some circumstances of precision?
Correct answer B. due to air resistance
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