Which of the following statements is/are correct? 1. atoms are the smallest particles of an element that retain the element's chemical properties. 2. substances composed of only one type of atom are classified as elements. 3. of the 118 known elements, only 48 occur naturally.

Iwould sure like to answer your question but i honestly just don’t know

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.