D=m÷v
so density would be 57.9 ÷ 3 = 19.3 g/cm³
Answer:
the acceleration during the collision is: - 5
Explanation:
Using the formula:

we get:

- Let, the maximum height covered by projectile be


- Projectile is thrown with a velocity = v
- Angle of projection = θ
- Velocity of projectile at a height half of the maximum height covered be

______________________________
Then –










- Now, the vertical component of velocity of projectile at the height half of
will be –


Therefore, the vertical component of velocity of projectile at this height will be–
☀️

yes. gravity is working on you and everything on you.
also earth is rotating
no not in respect ofimmediate surroundings
object could move at constant velocity = no change in either magnitude or direction
change of position "proves" this