Here is a bet that you are almost sure to win! Try dropping a dollar bill through a friend's fingers and offer to let her keep it if she can catch it. The bill should be started just at the finger level and your friend shouldn't have any advanced warning when it is going to drop. A dollar bill has a length of 15.5 cm and human reaction time is rarely less than 0.20 s. Do the necessary calculations-why is this almost a sure bet? caleulete d

Here is a bet that you are almost sure to win! Try dropping a dollar bill through a friend's fingers and offer to let her keep it if she can catch it. The bill should be started just at the finger level and your friend shouldn't have any advanced warning when it is going to drop. A dollar bill has a length of 15.5 cm and human reaction time is rarely less than 0.20 s. Do the necessary calculations-why is this almost a sure bet? caleulete d

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter1: Units And Measurement

Section: Chapter Questions

Problem 33P: In SI units, speeds are measured in meters per second (m/s). But, depending on where you live,...

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Please answer the following question(s): 1. The speed of a boat in still water is vá. A river flows with a speed of v₁. The boat travels distance of 19 miles downstream in a river in 1 hour. However, the return journey takes 2 hours. Calculate the vand v₁. Hint: Velocity=displacement/time. Displacement can be positive of neagtive depending on the direction. You will first need to set up the equations by taking into account the resultant velocity of the boat in flowing water. Consider the direction the river is flowing to be positive. Set up two equations, one for the downstream journey and one for the upstream journey, in terms of "v" and "v": Do v" and "v, add or substract downstream to give the resultant downstream velocity? Do v" and "v, add or substract upstream togive the resultant upstream velocity? Use the upstream direction as negative. The resultant upstream velocity should be negative. vb vb Downstream positive Vr Upstream negative Vr
You are driving along at a constatnt speed of 26 m/s and you look down at your phone to read a text message for 2.5 seconds. How many meters does the car travel while you are not looking?
The moticn of a ball scooped bya field hockus player can be moeleled by n=-16b^(2)+40b where b is the time in selends and h is the neignt of the ball. Will the ball ever reach 22 teat?
On a hot summer day in the state of Washington while kayaking, I saw several swimmers jump from a railroad bridge into theSnohomish River below. The swimmers stepped off the bridge,and I estimated that they hit the water 1.5 s later. (a) How high wasthe bridge? (b) How fast were the swimmers moving when theyhit the water? (c) What would the swimmers’ drop time be if thebridge were twice as high?
Hoping for complete solutions since I’m having a hard time with this. Pls skip if unsure or not willing to answer the subitems (these are all connected for one item). Thanks in advanced! Hardy, an avid TikToker, decided to look at his wristwatch to tell his friend dolphins the current time.However, his dolphins only understand the time if it is stated in terms of the resultant vector when the hourhand and minute hand vectors are added together. Assume that both vectors point from the center, outward.The length of the hour hand is ?. ?? [cm]; while the length of the minute hand is ?. ?? [cm]. Assume the hourhand only moves every hour.Follow this format in answering each sub-item:a. Draw the position of the hour and minute hands on an analog clock for this time configuration. Labelyour illustration with relevant angles and magnitudes b. Decompose the components of each vector along the ? and ? direction. c. Calculate for the resultant vector and express in the form required in each item.…
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 21
An object is dropped from rest and takes 2.25 seconds to reach the ground below. From what distance above the ground was it dropped? State this as a positive number and assume it has proper SI Units.
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.072 meters above the ground. Later, an acorn falls from somewhere higher up in the tree. If the acorn takes 0.151 seconds to pass the length of the meter stick, how high ℎ0above the ground was the acorn before it fell, assuming that the acorn did not run into any branches or leaves on the way down?
An astronaut chillin’ on the moon drops her bag of Takis (doh!). g on the moon is 1.6 m/s/s. The Takis fell for 1.23 seconds. (a) How far did they fall? (b) What was their final velocity?
You 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?
In SI units, speeds are measured in meters per second (m/s). But, depending on where you live, you’re probably mole comfortable of thinking of speeds in terms of either kilometers per hour (km/h) or miles per hour (mi/h). In this problem, you will see that 1 m/s is roughly 4 km/h or 2 mi/h, which is handy to use when developing your physical Intuition. More precisely, show that (a) 1.0m/s=3.6km/h and 1.0m/s=2.2mi/h .
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: 0.515