What is g exactly? When the woodpecker\'s head comes to rest, its final velocity

Question

What is g exactly?

When the woodpecker's head comes to rest, its final velocity becomes zero. Take the initial position of the woodpecker's head as the point of reference The acceleration of the woodpecker's head is calculated by the expression of kinematic equation with velocity and position as mentioned above Substitute 0.00 m/sfor v, 0.600 m/s for the initial velocity vo, and 2.00 mm for s in the equation of motion with position and acceleration and solve for a (0.00 m/s) = (0.500 m/s)' + 2(2.00 mm)a Rearrange the above expre ssion for and a solve, -In,-) 2(2.00 mm 1000 mm) -2 (2.00 mm) a = (0.500 m/s) a = (0.600 m/s 0.36 m2/s ) as- 0.004 m =-90 m/s2 The above value of acceleration in m/s is calculated in multiples of g by 90 m/s2 g9.8 m/s2 =9. 18 a=9.18g Hence, the average acceleration in meters per second and in multiples of g is 9.18g

Explanation / Answer

Here g is acceleration due to gravity. It’s value is 9.8m/s^2. In this problem acceleration of body is calculated in terms of g so the actual value is divided by 9.81 and answer is written as multiple of g.

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