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ISCI 2002 – Quiz – Chapters 2-3 (Each question is worth one point = 15 points) Part I – Fill in the Blanks 1. A quantity of 5 m/s2 is a measure of ______________ 2. Newton was the first to discover the notion of _________ or an object’s resistance to motion. 3. During free fall an object accelerates toward the Earth at this rate: __________ 4. Velocity differs from speed in that velocity has a ___________. 5. Newton’s Second Law states the acceleration is ___________________ to the mass of an object in motion. 6. Weight equals ___________ times the ________________. 7. Acceleration is the change in the ___________ of an object over time. 8. A vector quantity has both ________________ and a _________________. 9. Scalar quantities only have ___________________. 10. A person pushes on a wall with a force of 20 N. The wall pushes back with a force of 20 N. This is an example of Newton’s _________________ law. 11. Speed is ___________ covered over a period of ____________. Part II - Math Applications: 1. A bicycle moves from rest to 12 m/s in 6.5 seconds. Determine the acceleration of the bicycle. 2. How far away was a lightning strike if thunder is heard 5.00 seconds after seeing the flash? Assume that sound traveled at 350.0 m/s during the storm. 3. A 40-g grocery cart is pushed with a force of 96-N. Determine the acceleration of the cart. 4. How much force or thrust must a 20,000-kg airplane develop to achieve an acceleration of 1.5 m/s2 ?