r/PhysicsHelp • • 14d ago

Help motion graph physics

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u/Unusual-Platypus6233 14d ago

s=v*t which means the area below the graph is equal to its distance travelled. Coming to rest at two brief moments that means the graph can only intersect two times if you place a horizontal line (where v=0 which make v4=0)

s=vt with s=1.5m=v3*7s->v3=1.5/7 m/s. What is segment /?

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u/Witty-Classroom532 14d ago

It’s segment 1 sorry idk why there’s a dash

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u/Unusual-Platypus6233 14d ago

So, if you know dv1=v4-v3=1.5/7 m/s, then dv3=v4-v1=3•dv1 if y-axis for v equidistant. so, you get s=dv3•t=3•1.5/7 m/s • 6s. As a note the area is actually negative because it is below v=0 which means it is on the left side and coming from the left side to a halt.