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Newton’s Second Law

Force = Mass X Acceleration

Newtons = Kilograms X meters per second squared

N= kg x m/s2

1. What is a force? Give two examples of a force.

2. A rock has a mass of 1456 kg. It travels with acceleration due to gravity of 9.8 m/s2. Calculate the force.

3. A fire truck has a mass 1300 kg. It impacts a wall with a force of 15903 N. Calculate the acceleration.

4. Matthew is roller skating with his best friend Benji. They are accelerating at a rate of 18 m/s2. Together they have a mass of 250 kg, Calculate the force they apply when they collide with Zachary.

5. Nick is playing soccer for the Jaguars. He kicks the soccer ball which weighs 3 kg. It accelerates at a rate of 19 m/s2. Calculate the force.

6. Compare a motorcycle and a tractor trailer. Considering they have the same acceleration, which one would have the greatest force?

7. Rearrange the 2nd Law equation to solve for mass.

8. A bullet is fired on the shooting range. The bullet has a mass of .12 kg. The bullet is traveling with an acceleration of 56 m/s2. Calculate the force.

9. A large linebacker runs with an acceleration of 13 m/s2. He strikes a defensive tackle with a force of 32,000 N. What is his mass?

10. A grizzly bear charges at a hunter. The bear rushes him with an acceleration of 23 m/s2. The bear weighs 1457 kg. Calculate the bear’s force.

11. Mass is measured in what SI unit?

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