Answer:
The maximum height above its initial position is:

Explanation:
Using momentum conservation:
(1)
Where:
- m(b) is the mass of the bullet
- m(B) is the mass of the block
- v(ib) is the initial velocity of the bullet
- v(fb) is the final velocity of the bullet
- v(fB) is the final velocity of the block
Let's find v(fb) using equation (1)
We need to find the maximum height, it means that all kinetic energy converts into gravitational potential energy.




I hope it helps you!
<span>d.Identify Predict Decide Execute hope this helps:)</span>
As we know that total work done by a force is given by


so it is product of force and displacement along same direction
as we can write it as

so it must be the product of force and displacement in same directions so correct answer must be
<u>b. is parallel to the displacement of the object</u>
<span>A. No sound is heard
A*sin(wt)+(-A)*sin(wt)=0 - no sound
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