Electrons on the outermost shell/energy level
The block of wood is 3cm on each side so it is a cube. The volume of a cube is given by s^3. So the volume of this block is 3cm x 3cm x3 cm = 27 cm^3. density = mass/volume =27 g / 27 cm^3 = 1 g/cm^3
Answer:
170 kg m/s
Explanation:
Impulse = change in momentum
J = m Δv
J = (5 kg) (25 m/s − (-9 m/s))
J = 170 kg m/s
