Help please Identify the choice that best completes the statement or answers the

Question

Help please

Identify the choice that best completes the statement or answers the question. Write your answer on the lint? to the left of each question. Vectors A rightarrow . B rightarrow , and C rightarrow have magnitudes 6, 11, and 20. When these vectors are added, what is the least possible magnitude of their resultant? 25 15 2 3 Vector A rightarrow points north, and vector B rightarrow points east. If C rightarrow = B rightarrow - A rightarrow , then vector C rightarrow points: north of east. north of west. south of east. south of west. Arvin the Ant is on a picnic table. He travels 30 cm eastward, then 25 cm northward, and finally 15 cm westward. What is the magnitude of Arvin's net displacement? 70 cm 57 cm 52 cm 29 cm A string attached to an airborne kite is maintained at an angle of 40 degree with the horizontal. If a total of 120 m of string is reeled in while bringing the kite back to the ground, what is the horizontal displacement of the kite in the process? (Assume the kite string doesn't sag.) 100 m 84 m 77 m 92 m A baseball thrown from the outfield is released from shoulder height at an initial velocity of 29.4 m/s at an initial angle of 30.0 degree with respect to the horizontal. If it is in its trajectory for a total of 3.00 s before being caught by the third baseman at an equal shoulder-height level, what is the ball's net vertical displacement during its 3-s trajectory? 11.0m 9.80 m 22.1m zero A baseball is thrown by the center fielder (from shoulder level) to home plate where it is caught (on the fly at shoulder level) by the catcher. At what point does the magnitude of the horizontal component of velocity have its minimum value? (air resistance is negligible) just after leaving the center fielder's hand just before arriving at the catcher's mitt at the top of the trajectory magnitude of horizontal component of velocity is constant Wiley Coyote has missed the elusive road runner once again. This time, he leaves the edge of the cliff at 50.0 m/s horizontal velocity. If the canyon is 100 m deep, how far from his starting point at the edge of the cliff does the coyote land? 226 m 247 m 339 m 400 m A ball is launched from ground level at 30 m/s at an angle of 35 degree above the horizontal. How far does it go before it is at ground level again? 14 m 21m 43 m 86 m A jet airliner moving at 500 mph due east moves into a region where the wind is blowing at 120 mph in a direction 30.0 degree north of east. What is the new velocity and direction of the aircraft? 607 mph, 5.67 degree N of E 607 mph, 6.22 degree N of E 620 mph, 5.67 degree N of E 588 mph, 4.87 degree N of E A plane is moving due north, directly towards its destination. Its airspeed is 200 mph. A constant breeze is blowing from west to east at 40 mph. How long will it take for the plane to travel 200 miles north? one hour less than one hour more than one hour more information is needed

Explanation / Answer

1)

d)3

2)

b)south of east

3)

29

4)

120*cos(40) = 92 m

5)

d) zero

6)

at the top of trajectory

7)

a)226m

8)

86 m

9)

a) 607 @ 5.67 degrees

10)

a) one hour

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