Which of the following is an example of an object that is accelerating? A. A basketball sits motionless on the gymnasium floor.

B. A hockey puck slows down and comes to a stop.

C. A soccer ball travels at 3 m/s for one second.

D. A train travels 100 km in a straight path towards the northeast.

D.

Explanation:

Answer A - The basketball is not moving, motionless.

Answer B - The hockey puck eventually stops moving.

Answer C - The soccer ball eventually stops after one second.

Answer D is correct because the train is continuously moving.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme