Three particles move along the x-axis, each starting withv ox =10 m/s at t 0 =0

Question

Three particles move along the x-axis, each starting withvox=10 m/s at t0=0 s. The graph for A is aposition vs time graph; the graph for B is a velocity-vs-timegraph; the graph for C is acceleration vs time graph. Find eachparticles velocity at t=7.0 seconds. Work with the geometrys of thegraph, not with kinematics equations. Please show me the stepstaken to answer question Particle B Particle B Three particles move along the x-axis, each starting withvox=10 m/s at t0=0 s. The graph for A is aposition vs time graph; the graph for B is a velocity-vs-timegraph; the graph for C is acceleration vs time graph. Find eachparticles velocity at t=7.0 seconds. Work with the geometrys of thegraph, not with kinematics equations. Please show me the stepstaken to answer question

Explanation / Answer

okay, let start with the first one: -You can see that in 7s, the gragh x(t) is horizontal. So it isunchanged at t=7s. So v1=0m/s 2nd : -it is a v(t) graghp so it is obivious that v(t)(t=7)=-30(m/x), Youcan see it directly on the gragh. 3rd: - it is a(t) gragh, we know that the area under the gragh isactually its velocity. So at t=7s v=5*30/2-1*30-1*30=0,5*30=15(m/s)

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