- Question 1 (1 point)
A3.00E-6 kg snowflake is falling towards the ground with a constant velocity of <0.3, 0, -1.2> m/s. A sudden gust of wind lasting 2.0 s results in the snowflake moving with velocity < 2.3, 3.0,-2.2> m/s. What was the net force on the snowflake during the sudden gust of wind? (Assume the net force was constant during this period.)
A. < 3.0E-6,4.5E-6, -1.5E-6 > N
0
B. < 2.0, 3.0, -1.0 > N
0 <-6.0E-6, -9.0E-6, 3.0E-6 > N
O
C. < -1.0, -1.5, 0.5 > N
0
D. < 2.3E-6, 3.0 E-6, -2.2E-6 > N

All are great precautions but you can still lift lighter and different muscles in between hard workdays. this keeps other muscles not usually used in shape.

Distance covered, s = 8ft - 4ft = 4 ftinitial velocity, u = 34 ft/sthe acrobat is moving upwards and therefore, a = -g = -9.81 m/s^2 = 32.19 ft/s^2applying equation of motion; s = ut -1/2gt^2then,4 = 34t -1/2*32.19t^24 = 34t - 16.095t^2rearranging; -16.095t^2 + 34t - 4 = 0solving the quadratic equation; t = {-34 +/- sqrt [34^2 - 4(-16.)]}/2(-16.095) = 1.06 +/- 0.93 = 0.13 or 1.99the acrobat will take 0.13 seconds to be at 8 ft above the ground. additionally, once at the maximum height, the acrobat will move down and be at the same spot (that is height) after 1.99 seconds moving down.

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