A level A particle of mass 2kg is acted upon by a horizontal force of magnitude 10N for 8 seconds,in which time time it moves from rest until it is travelling with speed v米每秒.Show that v=40.The particle continues to move with this speed for the

来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/23 19:57:50
AlevelAparticleofmass2kgisacteduponbyahorizontalforceofmagnitude10Nfor8seconds,inwhichtimetimeitmove

A level A particle of mass 2kg is acted upon by a horizontal force of magnitude 10N for 8 seconds,in which time time it moves from rest until it is travelling with speed v米每秒.Show that v=40.The particle continues to move with this speed for the
A level
A particle of mass 2kg is acted upon by a horizontal force of magnitude 10N for 8 seconds,in which time time it moves from rest until it is travelling with speed v米每秒.Show that v=40.The particle continues to move with this speed for the next 10 seconds.It is then brought to rest by the application of a constant resisting force of magnitude x newtons.The total distance travelled is 800m.Find the time for which the particle is decelerating,and the value of X

A level A particle of mass 2kg is acted upon by a horizontal force of magnitude 10N for 8 seconds,in which time time it moves from rest until it is travelling with speed v米每秒.Show that v=40.The particle continues to move with this speed for the
v1-v0=at,
so,a=40/8=5(m*s^-2)
s1=v0*t+1/2*at^2=0.5*5*64=160m
s2=vt=40*10=400m
so,s3=800-400-160=240m
Because the particle is acted by a constant force:
v1^2-v0^2=2as
so,a2=-64/(2*240)=-0.133(m*s^-2)
so t=8/0.133=60s
x=ma=2*0.133=0.26N

A-level和O-level是什么? Exams Taken (Final year / A-level / O-level)Final year / A-level / O-level申请工作时用到的? GCE'N' Levels是什么标准,O'level ,A'level 有是什么标准?GCE N'level,O'level,A'level 分别是什么标准,如何达到这些标准.》 A level gceOlevel是什么意思?gceOlevel /Epuivalent是什么意思?还有gceAlevel/Epuivalent?也还有some college/Epuivalent? A level 高中力学运动学计算.这是Alevel数学.（带翻译）A particle of mass 0.1kg is at rest at a point A on a rough plane inclined at 15 degrees to the horizontal.The particle is given an initial velocity of 6m/s and starts to move up a A level A particle of mass 2kg is acted upon by a horizontal force of magnitude 10N for 8 seconds,in which time time it moves from rest until it is travelling with speed v米每秒.Show that v=40.The particle continues to move with this speed for the A-Level物理问题 a level是什么 什么是A-Level? a level是什么 a level是什么 英语翻译Definition:In games,one particle represents one event.A basic particle has multiple behavioral features,which make it a complete particle unit.A particle can be divided into three categories.Man’s motivation and behavior drives a game p a first-level university degree A-level的GCE是什么? A-level物理9702/35 A level生物难么? A level or equivalent certificate