College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

Chapter
Section

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A paper in the journal Current Biology tells of some jellyfish-like animals that attack their prey by launching stinging cells in one of the animal kingdom’s fastest movements. High-speed photography showed the cells were accelerated from rest for 700. ns at 5.30 × 107 m/s2. Calculate (a) the maximum speed reached by the cells and (b) the distance traveled during the acceleration.

(a)

To determine
The maximum speed of the cell.

Explanation

Given Info:

The acceleration of the cell is 5.30Ã—107â€‰m/s2 .

The time taken by the cell is 700â€‰ns .

The initial velocity of the cell is 0â€‰m/s .

Explanation:

The formula used to calculate the final velocity of the cell is,

v=v0+at

• v is the final velocity
• v0 is the initial velocity
• a is the acceleration of the cell
• t is the time taken

Substitute 0â€‰m/s for v0 , 5.30Ã—107â€‰m/s2 for a andÂ  700â€‰ns for t to find v

(b)

To determine
The total distance covered by the cell.

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