# Newton's 3 Laws

This crossword was created by Kevin Albertson with EclipseCrossword - www.eclipsecrossword.com

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## Across

1. A certain net force causes a 10. kg mass to accelerate at 20.m/s**2. The same force will cause a 5.0 kg mass to accelerate at ___m/s**2
2. Which two quantities are measured in the same units ?___ and force
3. As a constant unbalanced force acts on an object in the direction of motion, the objects speed.
4. A car whose mass is 2000 kg is accelerated uniformly from rest to a speed of 15 m/s in 10. s on a level highway. the net force accelerating the car is___N
5. For every action, there is an equal but opposite_____.
6. If the net _______ applied in the direction of motion to a certain object on a horizontal frictionless surface is doubled, the acceleration of the object is doubled.
7. A 30. kg child exerts a force of 100 N on a 50 kg object. The force the object exerts on the child is ___N
8. What net force will accelerate a 2.0 kg mass at 6.0 m/s2 ? ___ N
9. An unbalanced force of 10.0 N causes an object to accelerate at 2.0 m/s2. What is the mass of the object ?___Kg

## Down

1. If the sum of all forces acting on a car is zero, then the speed of the car always______ (3 words)
2. If the mass of a moving object could be doubled, the -----------of the object would be doubled
3. Isaac____ discovered the three laws of motion
4. As the vector sum of all the forces acting on an object increases, the _____ of the object increases
5. What is the net force acting on a 3000 kg truck traveling at a constant velocity of 10. m/s ? ___ N (word for a number)
6. A baseball bat moving at a high velocity strikes a feather. If air resistance is neglected, compared to the force exerted by the bat on the feather, the force exerted by the feather on the bat will be the____
7. If the net force applied in the direction of motion to a certain object on a frictionless surface is doubled, the acceleration of the object is
8. A table exerts a 2.0 N force on a book lying on the table. The force exerted by the book on the table is___N
9. The unbalanced force required to accelerate a 2.0 kg mass as 4.0 m/s**2 is ___N
10. If the mass of an object is decreased, its inertia
11. A force of 10. N applied to a given mass accelerates it at 1.0 m/s**2. The same foce applied to a mass on half as great would produce an acceleration ____ as big

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