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• The unbalanced force acting on an object equals the
object’s mass times its acceleration.
• Formula:
F= force; m= mass; a= acceleration
Note: The unit for mass is kg, acceleration is m/s2, and force is N
or kg.m/s2.
1. If you use the same force to push a truck and push a cr, the
car will have more acceleration than the truck, because the
car has less mass.
2. It is easier to push an empty shopping cart than a full one
because the full shopping cart has more mass than the
empty one. This means that more force is required top
push the full shopping cart.
1. How much force is needed to accelerate a 1400 kilogram car 2
meters per second squared?
A. Identify the given.
m = 1400 kg; a = 2 m/s2 ; F = ?
B. Solution.
F = m x a
F = 1400 kg x 2 m/s2
C. Answer . F = 2,800 kg.m/s2 or N
2. An object accelerates 3.0 m/s2 when a force of 6.0 newtons is
applied to it. What is the mass of the object?
A. Identify the given.
F = 6.0 N; a = 3.0 m/s2 ; m = ?
B. Solution.
m = F / a
m = 6.0 N / 3.0 m/s2
C. Answer . m = 2.0 kg
1. What acceleration will result when a 12 N net force
applied to a 3 kg object?
2. A net force of 16 N causes a mass to accelerate at a
rate of 5 m/s2. Determine the mass.

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Second law

  • 1.
  • 2. • The unbalanced force acting on an object equals the object’s mass times its acceleration. • Formula: F= force; m= mass; a= acceleration Note: The unit for mass is kg, acceleration is m/s2, and force is N or kg.m/s2.
  • 3. 1. If you use the same force to push a truck and push a cr, the car will have more acceleration than the truck, because the car has less mass. 2. It is easier to push an empty shopping cart than a full one because the full shopping cart has more mass than the empty one. This means that more force is required top push the full shopping cart.
  • 4. 1. How much force is needed to accelerate a 1400 kilogram car 2 meters per second squared? A. Identify the given. m = 1400 kg; a = 2 m/s2 ; F = ? B. Solution. F = m x a F = 1400 kg x 2 m/s2 C. Answer . F = 2,800 kg.m/s2 or N
  • 5. 2. An object accelerates 3.0 m/s2 when a force of 6.0 newtons is applied to it. What is the mass of the object? A. Identify the given. F = 6.0 N; a = 3.0 m/s2 ; m = ? B. Solution. m = F / a m = 6.0 N / 3.0 m/s2 C. Answer . m = 2.0 kg
  • 6. 1. What acceleration will result when a 12 N net force applied to a 3 kg object? 2. A net force of 16 N causes a mass to accelerate at a rate of 5 m/s2. Determine the mass.