Question
17. A meteorite hits the ground with an impact force of 200 N. The ground stops the meteorite in 0.1 seconds. The final velocity of the meteorite is 300m/s. The impulse on the ground from the meteorite is Nos. (1 Point) [4) 60,000N^ast s 50N^ast s 30N^ast s 20N^ast s
Solution
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AliceElite · Tutor for 8 years
Answer
<p> D</p>
Explain
<p> The impulse is a measure of the overall effect of a force acting for a certain amount of time. Impulse can be calculated using the formula:<br />Impulse = Force * time<br />Also, Impulse can be calculated by the product of the change in momentum and time. Here, assuming the initial velocity of the meteor and its initial momentum to be zero, we get:<br />Impulse = change in momentum/time = mass * change in velocity/time<br />But here, We're not given the mass of the meteorite, so we need to consider force's impact over time i.e. <br />Impulse = Force * time = 200N * 0.1s</p>
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