A speed boat increases its speed from 42m/s to 88m/s in a 4 seconds period. What is the acceleration during this period?

What is limiting reactant? with examples

Ihat will happen if i added baking soda to vinegar

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.