Wize University Dynamics Textbook (Master) > Kinematics: Rectilinear Motion

End of Chapter Practice Questions

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Quiz: End of Chapter Practice

A particle moves according to the following function:

x(t)=3t2−21t+30x(t)=3t^2-21t+30x(t)=3t2−21t+30

Determine the following:

The velocity of the particle after 5 seconds

The acceleration of the particle at 3 seconds

The distance travelled over the first 8 seconds

I don't know

You're floating in space near your space capsule and manage to detach from it. You start 10 m away from the capsule at rest, and accelerate towards the capsule at the following rate:

a=−0.7(x+2)2a =- \frac{0.7}{(x+2)^2}a=−(x+2)20.7​

At this rate, what will your velocity (in m/s) be upon impact?

Answer

I don't know