Because they have different density (density of feathers < density of nails)
Answer:
5.00 x 10^9 j
Explanation:
mass = 100 kg
speed / velocity = 10 km/s x 1000 = 10,000m
K.E =
10,000x 100/ 2
= 5000000000
= 5.0 x 10^9j
Answer:
1 m/s²
Explanation:
a = v² / r
a = ω² r
a = (2π rad / 2π s)² (1 m)
a = 1 m/s²
Unfortunately, since Legos are made of plastic, they will stick around for millennia if they end up in landfills. Recycling Legos is hard, since they are made with an unusual plastic that is not accepted at many recycling centers. However, Legos are highly reusable.
<span>Don't know what you mean by Earths Spheres. The Earth is a sphere -- singular. And it is made up of LOTS of matter</span>