posted by Sarah .
When a force is applied to an object with mass equal to the standard kilogram, the acceleration of the mass is 3.25 m/s2. When the same magnitude force is applied to another object, the acceleration is 2.75 m/s2. What is the mass of the object? What would the second object's acceleration be if a force twice as large were applied to it?
Sarah, you are usually better off not specifying the responder in case the latter is not available.
For the present question, Newton's second law prevails: F=ma, where F is measured in N (newton), m in kg and acceleration in m s-2.
If m1=1 kg, a=3.25 m s-2,
F = m1 * a = 1*3.25 = 3.25 N.
For the second object of mass m2,
3.25 = m2 * 2.75 m s-2
Solve for m2.
From the relation F=ma,
what would the second object's acceleration be if a force twice as large were applied to it?