72km/hr = 72000m/3600seconds(we convert km/hr to m/s
= 20m/s
Velocity= 20m/s
In 4seconds,distance covered=20x4= 80m
Therefore,an accident occurs because in 4seconds, the car would have moved past 20m
Answer: Matter is how much space or opacity an object takes up. In short anything that take up space. Things like balls, trees, and even people are all made of matter. Mass is how much matter a object has. Air also has mass also, even though we can't see it. Things like cars, buildings, even planets have mass.
Explanation: Paragraphs are sometimes 4-6 sentences.
Answer: 6m
Explanation: 6 is more than 3 and their both being measured by m
Answer:
B
Explanation:
Wave length is the height perpendicular verically of a wave
Answer:
Yes, but its magnetic power is very weak so its not that noticeable to the average person whos not paying attention.
