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Chapter 11: Q. 42 (page 289)

The flowers of the bunchberry plant open with astonishing force and speed, causing the pollen grains to be ejected out of the flower in a mere 0.30 ms at an acceleration of 2.5脳10-4m/s2. If the acceleration is constant, what impulse is delivered to a pollen grain with a mass of 1.0脳10-7g?

Short Answer

Expert verified

The impulse delivered to pollen grain is7.5脳10-10N.s

Step by step solution

01

Step 1. Given information

Acceleration of pollen grain, 2.5脳10-4m/s2

Mass of pollen grain,1.0脳10-7g

02

Step 2. Evaluating value of force

According to Newton's second law,

F=maF=1.0脳10-10kg脳2.5脳104=2.5脳10-6N

03

Step 3. Impulse calculation

Now, evaluating the impulse

J=2.5脳10-6脳0.3脳10-3=75脳10-11kg.m/s

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