PHYS 1050 Study Guide - Final Guide: Auto Racing, Junkers J.I, Angular Acceleration

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turquoisegnu128

24 Oct 2018

School

University of Manitoba

Department

Physics and Astronomy

Course

PHYS 1050

Professor

All

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Document Summary

Record all answers on the computer score sheet provided. Black pen will look good but may not be read reliably by the scoring machine. Select the answer that is closest to yours. A formula sheet is provided for your use; you may not use your own formula sheet or any other materials or notes. Calculators of any type are allowed, but not devices that store text or that can communicate with other such devices. Be sure your name and student number are printed on the score sheet and the student number correctly coded in the box at the top right-hand side of the sheet. An electric car starts from rest and accelerates at a rate of 2. 0 m/s2 in a straight line until it reaches a speed of 10 m/s. The car then slows down at a constant rate of 1. 0 m/s2 until it stops.

Related Questions

A 4.0-Kg particle is moving with a velocity 20.0 m/s in the+xdirection when it is at position x=1.0 For x>1.0 m, theparticleexperiences a single force F= (Î±-Î²x)i, where Î±=36.0N andÎ²=52.0 N/m. Determine

(A) the work done by the force on the particle as it movesfromx=1.0m to x=5.0m.

(B) the velocity of the particle at x=5.0 m.

A force Fx acts on a particle that has a mass of 2 kg. The force isrelated to the position x of the particle by the formula Fx = Cx3,where C = 0.5 if x is in meters and Fx is in Newtons.
(a)What are the SI units of C? (Use the following as necessary: Nand m.)

(b) Find the work W done by this force as the particle moves from x= 3.6 m to x = 1.1 m.
W = J

(c) At x= 1.1 m the force points opposite the direction of theparticle's velocity (speed is 12 m/s). What is its speed at 3.6m?
v3.6m = m/s

Can you tell its direction of motion at x = 3.6 m using only thework-kinetic energy theorem?
yes
no

explain.

1). The position of a 2 kg particle moving in the x - y planvariesas a function of time according to the expression.

r = [ ( 6t + 1 ) m ] i + [ ( -4.9t^2+ 8t + 3 ) m ] j

a). Find the kinetic energy of the particle as a functionoftime.

b). Find the work done on the particle between t = 1s and t=5s.

c). Determine the power delivered to the particle as afunctionof time.

what is the value of this power at t =3s

d). What is the net force doing work on the particle ?

e). Find the time at which the power is zero. Examinetheposition and velocity at this time and explain why the poweriszero.

Please be sure before you work this problem, thx.