3. o/2 points Previous Answers OSColPhys1 2.P.012.WA Influenced by the gravitati

Question

3. o/2 points Previous Answers OSColPhys1 2.P.012.WA Influenced by the gravitational pull of a distant star, the velocity of an asteroid changes from from +20.1 km/s to -19.1 km/s over a period of 1.82 years. (a) What is the total change in the asteroid's velocity? (Indicate the direction with the sign of your answer.) The change is the final velocity minus initial velocity. Also, watch unit conversions. m/s (b) What is the asteroid's average acceleration during this interval? (Indicate the direction with the sign of your answer.) Supporting Materials

Explanation / Answer

a) change in velocity = final velocity - final velocity

= -19.1 - 20.1 = - 39.2 km/s or - 39200 m/s

b) average acceleration = change in velocity / time taken  

= -39200 / 1.82 *365*24*60*60 = - 0.0006830 m/s2 or - 6.830 * 10-4 m/s2

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