Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Physics Expert

Whenever jumping straight down, you can be fatally injured if you land stiff-legged. One way to avoid the injury is to bend your knees on landing to decrease the force of the impact. A 75 kg man just before contact with the ground has a speed of 6.4 m/s.

Q1. In a stiff-legged landing he comes to halt in 2.0 ms. Find out the average net force which acts on him throughout this time.

Q2. Whenever he bends his knees, he comes to a halt in 0.10s. Find out the average net force now.

Q3. Throughout the landing, the force of the ground on the man points upward, whereas the force due to gravity points downward. The average net force acting on the man comprises both of such forces. Taking into account the directions of the forces, determine the force of the ground on the man in parts (1) and  (2).

Physics, Academics

  • Category:- Physics
  • Reference No.:- M99835

Have any Question? 


Related Questions in Physics

Describe the asymptotic properties of the probabilities

Describe the asymptotic properties of the probabilities depicted in figure 16.11a, for a grid in a triangle of width and height N. Figure 16.11

The acceleration due to gravity g is given bywhere m is the

The acceleration due to gravity, g, is given by where M is the mass of the earth, r is the distance from the center of the earth, and G is the universal gravitational constant. (a) Show that when r changes by Δr, the cha ...

1 using only basic physics no algebra and no equations show

1. Using only basic physics, no algebra, and no equations, show that at T=OK, E F =(E C -E D )/2 in an n-type semiconductor with N DD  = 10 and N AA  = 0. 2. Using only basic physics, no algebra, and no equations, show t ...

A yam is put in a hot oven maintained at a constant

A yam is put in a hot oven, maintained at a constant temperature 200°C. At time t = 30 minutes, the temperature T of the yam is 120° and is increasing at an (instantaneous) rate of 2°/min. Newton's law of cooling (or, in ...

While the genome acquires information through natural

While the genome acquires information through natural selection at a rate of a few bits per generation, your brain acquires information at a greater rate. Estimate at what rate new information can be stored in long term ...

Consider the steady-state diffusion of a solute through a

Consider the steady-state diffusion of a solute through a membranous sphere as shown in Figure6.35 (not given). Such a situation occurs when drugs are released from liposomes. The membrane is defined by the region betwee ...

Suppose your bathroom scale reads your mass as 82 kg with

Suppose your bathroom scale reads your mass as 82 kg, with an 8% uncertainty. What is the uncertainty in your mass? (Note that uncertainties should be reported to one significant figure.)

A 42 m long uniform beam is supported by a cable at its

A 4.2 m long uniform beam is supported by a cable at its center. A 69 kg steelworker stands on one end of the beam, and a bucket of concrete is suspended from a point 76 cm from the beam's center, on the other side of th ...

Determine the mass transfer coefficient kc for the transfer

Determine the mass transfer coefficient, kc, for the transfer from a glucose sphere, 0.3 cm in diameter, which is sub merged in a 25°C aqueous stream flowing at a bulk velocity of 0.15 m/s. The mass diffusivity of glucos ...

The normal human ear can distinguish a difference in sound

The normal human ear can distinguish a difference in sound level of about 0.6 dB at a given frequency. What is the percentage of power increase required to raise the sound level 0.6 dB?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen