Answer:
B.
Explanation:
Most substances found in nature, wood, soil and rocks, are mixtures of chemical compounds.
Answer
about – 0.7
K.E=1/2 mv²
m=1160 kg
v=19.0 m/s
so k.e=1/2*1160*(19.0)²
K.E=1/2*1160*361
K.E=1/2*418760
K.E=209380=2.0*10^5 j
