Alex, who has a mass of 100 kg, is skateboarding at 9.0 m/s when he smacks into

Question:

Alex, who has a mass of 100 kg, is skateboarding at 9.0 m/s when he smacks into a brick wall and comes to a dead stop in 0.2 s.

a. Show that his deceleration is 45 m/s².

b. Show that the force of impact is 4500 N. (Ouch!)

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Conceptual Physics

ISBN: 978-0321568090

11th edition

Authors: Paul G. Hewitt

See More Books

Question Posted: Aug 18, 2017 02:45 PM

See More Questions

Leroy, who has a mass of 100 kg, is skateboarding at 9.0 m/s when he smacks into a brick wall and comes to a dead stop in 0.2 s. a. Show that his deceleration is 45 m/s2. b. Show that the force of...
A satellite of the Earth has a mass of 100 kg and is at an altitude of 2.00 x 106 m. (a) What is the potential energy of the satellite Earth system? (b) What is the magnitude of the gravitational...
If superman has a mass of 100 Kg on his birth planet Krypton, where the acceleration of gravity is 25 m/s2, determine (a) His weight on Krypton, in N, and (b) His mass, in Kg, and weight, in N, on...
You decided to buy a TV set on an installment basis and agree to pay 2, 999 every end of the month, with 18 equal monthly payments at a 2% interest rate. How much are your payments after 18 months?...
The machine instruction a. br FIXED_DEST causes the computer to execute its next instruction from memory location FIXED_DEST. What are the detailed steps of the ALU and/or control unit to execute...
Consider the spreading of a highly communicable disease on an isolated island with population size N. A portion of the population travels abroad and returns to the island infected with the disease....
Because of surface tension, it is possible, with care, to support an object heavier than water on the water surface as shown in Fig. P7.14. The maximum thickness, $h$, of a square of material that...
You are the chief financial officer for RAM Solutions, a small but rapidly growing retail computer hardware chain. You are trying to figure out how to finance the new buildings that are scheduled to...
A projectile is launched horizontally at A with a speed vo. The time Right is 10 sec. and the path of the projectile at B is inclined at 20 with the horizontal a. b. Determine the range x Determine...
A machine produces components for use in cellular phones. At any given time, the machine may be in one, and only one, of three states: operational, out of control, or down. From experience with this...
If stationary observers measure the shape of a passing object to be exactly circular, what is the shape of the object when viewed face-on by observers on board the object, traveling with it?
Light is reflected from a moving mirror. How is the reflected light different from the incident light, and how is it the same?
Define improvisation and agile project management, and explain how they are alike and how they are different.
The following information is available for Fuller Manufacturing Company for the month ending January 31: Cost of direct materials used in production $147,300 Direct labor 176,800 Work in process...
The partnership of frick Wilson and Clarke has elected to cease all operations and liquidate the business property A balance sheet drawn up at this time shows the following account balances Cash % 6...
Marketers continue to explore new ways to better understand how customers behave by using big data and analytics to help a business predict consumer behavior and understand the perceived value that...
VitexIncorporated manufactures a popular consumer product and it has provided the following data excerpts from its standard cost system: Inputs Direct materials Direct labor Variable manufacturing...
Here are selected 2 0 2 2 transactions of Bramble Company.Jan . 1 Retired a piece of machinery that was purchased on January 1 , 2 0 1 2 . The machine cost $ 6 2 , 0 0 0 and had a useful life of 1 0...
Repeat Exercise 25 using these letters: AGGYB. Exercise 25 Many newspapers carry Jumble, a puzzle in which the reader must unscramble letters to form words. The letters BUJOM were included in...
You have accepted the engagement of auditing the financial statements of the C. Reis Company, a small manufacturing firm that has been your auditee for several years. Because you were busy writing...
Our model of Executive Paper is an example of a top-down planning model. Some firms use a bottom-up financial planning model, which incorporates forecasts of revenues and costs for particular...
Corporate financial plans are often used as a basis for judging subsequent performance. What do you think can be learned from such comparisons? What problems are likely to arise, and how might you...
What problems are likely to be encountered in keeping the financial plan up-to-date?
Privack Corporation has a standard cost system in which it applies overhead to products based on the standard direct labor-hours allowed for the actual output of the period. Data concerning the most...
HomeLife Life Insurance Company has two service departments ( actuarial and premium rating ) and two production departments ( advertising and sales ) . The distribution of each service department s...
Otsego Industries manufactured 300,000 units of product last year and identified the following costs associated with the manufacturing activity: Variable costs: Direct materials used Direct labor...

Alex, who has a mass of 100 kg, is skateboarding at 9.0 m/s when he smacks into

Question:

Step by Step Answer:

a a vt 90 ms...View the full answer

Conceptual Physics

Related Video

Students also viewed these Mechanics questions