Answer:
momentum=mass×velocity
momentum =400kg×20m/s=8000kg.m/s
2.7549 x 10^4 is the answer I hope this helped u
You can estimate one more digit past the smallest division on the measuring device. If you look at a 10mL graduated cylinder, for example, the smallest graduation is tenth of a milliliter (0.1mL). That means when you read the volume, you can estimate to the hundredths place (0.01mL).
