Brainpop Acceleration Questions With Correct Answers

What does speed measure? How fast an object is going Which of the following can be used to measure an object's speed? Miles per hour What does acceleration measure? The rate at which speed or direction changes What is the difference between positive and negative acceleration? Positive acceleration occurs when objects speed up; negative acceleration occurs when objects slow down Which of these is an example of acceleration? A speeding car brakes to a stop Which of these statements is true? Acceleration in the direction of motion speeds you up If you're sitting still in a chair reading this, what is your acceleration? 0 m/s/s When would acceleration increase most? Rolling down a steep hill How does braking stop a bike? It causes a quick negative acceleration against the bike's forward motion You're in a moving car. Which of the following changes would always mean there's been some acceleration? A change in speed