I believe the answer is D) and also there are technically 8 planets because Pluto was considered a dwarf planet so they dont consider it a planet at all
Acceleration a = F/m = 20/4 = 5 m/s^2
v = a x t = 5 × 5 =25 m/s
I believe it is a physical change because it doesnt have anything to do with chemicals
Explanation:
Volume of cube= length x width x height
=2 x 3 x 4
=24cm^3
Density = mass/volume
=28/24
=1.166
=1.2g/cm^3
