1. mass
2. weight
3. weight
4. weight
5. mass
6. mass
The distance covered by the acorn is 3.136 m.
<u>Explanation:</u>
The time taken for the acorn to hit the ground is 0.8 s. As it is a free fall, the acorn will be completely under the influence of gravity. So the acceleration will be acceleration due to gravity.
Then using the second law of equation,

Since the initial velocity and time is zero, then the time taken to reach the ground is stated as 0.8 s, so

So the distance covered by the acorn is 3.136 m.
The generation of a magnetic field by an electric current is _electromagnetism_.
Speed is the distance travelled by an object whereas velocity is distance travelled by an object per unit time in a given direction.