You attach a meter stick to an oak tree, such that the top of the meter stick is 2.87 meters above the ground. Later, an acorn falls from somewhere higher up in the tree. If the acorn takes 0.136 seconds to pass the length of the meter stick, how high họ above the ground was the acorn before it fell, assuming that the acorn did not run into any branches or leaves on the way down?
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- You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground. Later, an acorn falls from somewhere higher up in the tree. If the acorn takes 0.311 seconds to pass the length of the meter stick, how high (h0) above the ground in meters was the acorn before it fell, assuming that the acorn did not run into any branches or leaves on the way down?III. 16. The floor area of a Boeing 707-230 is 106 m2. Express this area in ft2. 17. Convert a speed of 45 mph to fps. 18. The Silver Sabre has a maximum rate of climb of 4800 ft/min. Determine the rate of climb in ft/s ... sneed 21Elsa?! Bida-bida. In Arendelle, Queen Elsa loves to show magic tricks to the kids and so, sje begins her show by standing on top of Olaf, a snowman that quickly melts the moment she jumps away from it. Olaf stands 1.63 [m] tall. If Elsa jumps directly upward from Olaf's head and takes 1.94 [s] to rwach a maximum height of 5.37 [m] from where Olaf's head was, how long will it take her to reach the ground from the moment she jumps off Olaf's head? O 2.40 [s] O 3.14 [s] O 1.20 [s] O 0.74 [s]
- Vino 30. A ball is thrown from an initial height of 6 feet at a rate of 42 ft/s to someone standing on a roof 30 feet above the ground. Use the discriminant to determine if the ball will reach the person on the roof. Again, use the formula h = -16 + vt + c. a. yes bns analom d+x lo ritblw s.andtom A+x to rfipnol a esd olsq slugnstoos A E nilb art ptsq ert to anoianamib art bniA b. no Islo) s 5.016 maybe not enough information С. u pA 30 M m Thyd m ar d.A toy rocket moving vertically upward passes by a 1.8 m -high window whose sill is 7.0 m above the ground. The rocket takes 0.16 s to travel the 1.8 m height of the window. a) What was the launch speed of the rocket? Assume the propellant is burned very quickly at blastoff. b) How high will the rocket go?A swimmer took a running leap off a high-diving platform. The swimmer was running at 2.8 m/s and hit the water 2.6 seconds later. a) How high was the platform, and b) how far from the edge of the platform did the swimmer hit the water? Ignore wind resistance.
- Your car is parked at the high school. After school you take off and travel for 27 km towards lowaCity. At this point, you realize you forget your wallet and travel back to Tipton for 15 km beforeyou find your wallet was just on the floor. You turn back and head towards lowa city for 36 km.What is your displacement?A kangaroo can jump over an object 1.3 m high. Considering just its vertical motion, how long the kangaroo is in the air (hint: consider up and down motions)? Write the answer in seconds. of on Answer: 0.515You visit the Grand Canyon and drop a rock off the edge of a cliff. The distance ther ock will fall is 16 feet the first second, 48 feet the next second, 80 feet the third second, and so on in an arithmetic sequence. What is the total distance the object will fall in 6 seconds?
- simple device for measuring yourreaction time. It consists of a cardboard strip marked with a scaleand two large dots. A friend holds the strip vertically, with thumband forefinger at the dot on the right in, being careful not to touch the strip. Your friend releasesthe strip, and you try to pinch it as soon as possible afteryou see it begin to fall.The mark at the place where you pinch thestrip gives your reaction time. (a) How far from the lower dotshould you place the 50.0 ms mark? How much higher shouldyou place the marks for (b) 100, (c) 150, (d) 200, and (e) 250 ms?(For example, should the 100 ms marker be 2 times as far fromthe dot as the 50 ms marker? If so, give an answer of 2 times. Canyou find any pattern in the answers?)A juggler throws a ball straight up into the air. If the ball returnsto its original position in the juggler’s hand in 0.98 s, what was itsmaximum height above the juggler’s hand?Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that one such plate has an average speed of v = 2.1 cm/year. What distance, d, in meters, does the plate move in 1.8 s at this speed?