Please explain steps:
An 80 kg swimmer steps off a platform 10 m above the water and free-falls downward. Once she enters the water, drag forces take over and bring her to rest in 3.0 s (after her feet first
touch water).
(a)Assuming that the drag force is constant, find this force. (b) Find her depth under the water when she comes to rest.
Please explain steps: An 80 kg swimmer steps off a platform 10 m above the water...
An 80 kg swimmer steps off a platform 10 m above the waterand free-fallsdownward. Onceshe entersthe water, drag forcestake over andbring her to rest in 3.0 s (after her feet first touch water). (a) Assuming that the drag force is constant, find this force. (b) Find her depth under the water when she comes to rest.
5. A 65.0-kg woman steps off a 10.0-m diving platform and drops straight down into the water. After entering the water she continues falling through the water until she reaches a depth of 4.00 m. a. Calculate the work done on the woman by gravity and by the water. Ignore air resistance. b. What is the average net force exerted on her over this 4.00-m displacement in the water? c. How does the average net force exerted on the woman...
The platform height for Olympic divers is 10 m. A 60 kg diver steps off the platform to begin her dive. a. How much gravitational potential energy does the diver have? 2. LOL b. How much kinetic energy does the diver have as she strikes the water? c. How much work does the water do on the diver to stop her motion? d. If the diver stops in 2.5 m after entering the water, what net force is applied to...
A high diver of mass 63.0 kg Jumps off a board 10.0 m above the water. If her downward motion is stopped 1.80 s after she enters the water, what average upward force did the water exert on her?
4. A 90 kg rocket stuntman steps off of a platform that is 50 m above the ground (and he therefore starts at rest). While he is descending, his rocket pack exerts a steady upward force of 800 N. Ignore air resistance. (a) What is the magnitude and direction of the net force on the stuntman? (b) What is his acceleration? (c) How long does it take him to reach the ground? (d) What is his speed when he reaches...
Kate, a bungee jumper, wants to jump off the edge of a bridge thatspans a river below. Kate has a mass m, and the surface of thebridge is a height h above the water.The bungee cord, which haslength L when unstretched, will first straighten and then stretchas Kate falls.Assume the following:? The bungee cord behaves as an ideal spring once it begins tostretch, with spring constant k.? Kate doesn't actually jump but simply steps off the edge of thebridge and...
3. A merry-go-round (uniform disk) of mass M = 125 kg and radius R = 1.5 m is rotating initially wi = 12 rad/s. A person (we'll call the person a thin uniform rod) of mass m = 65 kg and height h= R initially stands over the rotation axis. The person decides to lie down with feet at the center and head at the outer edge (see figure). Since the person is a "thin rod', we can ignore the...
plank plenk ----> 1. [1pt] A professor of mass m= 80 kg is seated on a light harness connected to a rope and pulley system as shown. The professor's feet touch a uniform plank of mass m lank = 20 kg which is supported by a hinge at the wall. A mass M in a light bucket is suspended from the right end of the plank. The professor is a distance ( = 2.10 m from the hinge; the plank...
The flight attendant had to ask her twice, “Anything to drink, ma’am?” “Oh, sorry. Water, no ice, please,” said Noelle Freeman, the CFO of Franklin Climate Systems. Watching the clouds out her window at 30,000 feet, she’d been deep in thought. She was on her way home from two days in Arkansas visiting her company’s largest facility. Franklin was in the business of designing, engineering, and manufacturing climate control systems for cars and SUVs. This is a division of FB...
Many of the bones of the body have an English name as well as a
medical name, i.e., skull (cranium). List as many of these as you
can.
for each multiple-choice question. 1. A cart of mass 4 kg experiences a constant acceleration of 3.0" What is the magnitude of the force exerted on the cart? A. 0.75 N B. 6.0 N C. 2N D3N 2. Displacement vector is 6.0 miles along the negative x-axis and a second displacement vector...