Question

The initial velocity and acceleration of four moving objects at a given instant in time are...

The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.1 s.

C.) initial velocity -11 m/s Acceleration +2.7 m/s

D.) initial velocity -12 m/s Acceleration -2.7 m/s

What is the final speed for C & D?

For C I got -5.33 m/s

For D I got -17.67 m/s

I don't understand what I'm doing wrong

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Homework Answers

Answer #1

I think your problem is that you find out velocities of C and D .For finding out speed take only magnitude and negative sign get removed on taking magnitude.Also note that unit of acceleration is m/s^2 .You are writing it m/s

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