23. In science, force is the push or pull on an object with mass that causes it to change velocity (to accelerate). Force has both magnitude and direction.
The acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely
proportional to its mass. In equation form, Newton's second law of motion is
a=Fnet m=Fnet/m.
This is often written in the more familiar form
Fret = ma.
When only the magnitude of force and acceleration are considered, this equation is simply F=ma.
23.1 Suppose that a box of 10 kg is moving towards north with a velocity of 10 m/s, such
that it has zero net force. Now a force of 100 N Is exerted on it towards south. What is
the acceleration produced and in which direction?
23.2. Acceleration is:
(a) Directly proportional to mass
(b) Inversely proportional to mass
(c) Both a and b
(d) None of these
23.3 The Newton's second law of motion gives measure of which of the following?
(a) Force
(b) Momentum
(c) Angular momentum
(d) None of these
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Answer:
23.2 = ( c ) 23.3 = ( a )
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Answer:
chicken wings chicken wings hotdog and baloney
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