Q. 9

Expert-verifiedFound in: Page 227

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

You throw a g coin straight down at m/s from a -m-high bridge.

a. How much work does gravity do as the coin falls to the water below? b. What is the speed of the coin just as it hits the water?

a). J work does gravity do as the coin falls to the water below

b). The speed of the coin is m/s

Mass od the coin

Speed of the coin m/s

Height of the bridge m

As the coin fall downward it accelerates with as a result its velocity changes,

Hence by calculating a change in its kinetic energy in the duration till it hits the water surface,

Now,

For the equation of the motion:

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