Newton's second law of Motion
Formulas:
Force = Mass x Acceleration
Mass = force/acceleration
Acceleration = force/ mass
Directions: use the formulas to solve the following problems on a separate sheet of paper. Show your work.
1. What is the force on a 5kg ball that is falling freely due to gravity at 9.8m/s/s?
2. A girl on roller skates accelerates at a rate of 2 m/s/s with a force of 100 N. What is her mass?
3. An elevator has a mass of 100kg. What is the force needed to accelerate it upward at a rate of 4m/s/s?
4. A car with a mass of 1500kg has a force of 3000N. What is the car's acceleration?
5. A 700kg plane is launched from an aircraft carrier in 2 seconds by a force of 3500N. What is the plane's acceleration?
6. What force would be required to accelerate a 40kg mass train by 4m/s/s?
7. What is the Force of a 920kg car moving at a speed of 25m/s?
8. Which has more force: a 250k dolphin swimming at a 4m/s or a 350kg shark swimming at 2m/s?
9. Why is it important for drivers to allow more distance between their cars when they travel at faster speeds?
