Average Speed in Various Cases, Physics, Basic Statistics

Assignment Help:
Define Average Speed in Various Cases

(a) Particles covering different distances in different times say a particle covers s1 distance in time t1 ,s2 in time t2, s3 in time t3 and so on then average speed is

v = s1 + s2 + s3+……. /t1 + t2+ t3……. = s1 + s2+ s3+……/s1/v1 + s2/v2 + s3/v3+……

Special case

If s1 = s2 = s

v = 2s/s (1/v1 + 1/v2) = 2v1 v2/v1 + v2 (harmonic mean)

(b) Bodies moving with different speeds in different intervals of time a body moves with velocity v1 on time t1, v2 in time t2, v3 in time t3 and so on then

v = v1 t1 + v2 t2 + v3 t3 +….. /t1 + t2 + t3 +…..

Special case

if t1 = t2 = t3…..t (say) then

v = v1 + v2 + v3+….vn (arithmetic mean)

Units of speed or velocity me-1 in SI, cms-1 in CGS and fts-1 on FPS. Dimensional formula (LT-11)

Acceleration the time rate of change of velocity is called acceleration.

A = dv/dt

(a) Uniform acceleration a body is said to moves with uniform acceleration if acceleration remains constant throughout the motion and direction of motion does no change with time, that is,

(i) A = dv/dt = constant

(ii) Direction of motion remains unchanged.

(b) Variable or non-uniform acceleration if the acceleration is not constant or if the acceleration is constant but direction of motion varies or both vary. The particle is said to posses variable acceleration

Unit of acceleration ms-2 in SI system, cms-2 in Cos system fts-2 FPS system

Dimensional formula of acceleration [LT-2]

Related Discussions:- Average Speed in Various Cases, Physics

Mariginal costing, marginal costing and its break-event analysis

marginal costing and its break-event analysis

Production cost, If q=2,TP=450 and AP=225, what is MP. How can I figure out...

If q=2,TP=450 and AP=225, what is MP. How can I figure out what my marginal product will be?

Quantitative techniques, How can we apply matrix algebra in various decisio...

How can we apply matrix algebra in various decision models in business and management?

Difference between an unadjusted trial balance and an adjust, Difference be...

Difference between an unadjusted trial balance and an adjusted trial balance? The variations between unadjusted test stability and altered test stability are the amounts registe

Statistics is the backbone of decision-making, 1. (a) 'Statistics is the ba...

1. (a) 'Statistics is the backbone of decision-making'. Describe.     (b) 'Statistics is as good as the user'. Describe. 2.  Differentiate between the following with example.

Ogive curve.., will the ogive curve eventually decrease?

will the ogive curve eventually decrease?

Regression analysis, Regression line drawn as y=c+1075x, when x was 2, and ...

Regression line drawn as y=c+1075x, when x was 2, and y was 239, given that y intercept was 11. Caculate the residual

Cost accounting, what is the relationship of cost accounting to financial a...

what is the relationship of cost accounting to financial and management accounting?

Agency funds, Agency funds,define it Organization money is used to account ...

Agency funds,define it Organization money is used to account for the resources presented by the state as an agent for individuals, private companies, and other health systems. Orga

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd