1) what is the mathematical expression for newton's second law of motion? a) F = m+a b) F =ma c) F = m/a d) F =mα 2) what unit is used to measure force in the SI system? a) kilogram b) watt c) newton d) joule 3) a 5kg object experiences a force of 20N. what is its acceleration? a) 4 m/s² b) 25 m/s² c) 5 m/s² d) 100 m/s² 4) if two object have the same force applied but different masses, the one with less mass will ? a) stay still b) move in circles c) accelerate less d) accelerates more 5) a 5 kg object has 20N to the right and 5N to the left acting on it. what is the net force and direction? a) 15N left b) 25N right c) 15N right d) 5N left 6) which force must be included in the free body diagram of a falling object? a) normal force b) friction c) air resistance d) weight (gravitational force) 7) newton's second law is used with an free body diagram to determine ? a) speed b) acceleration c) velocity d) displacement 8) why is it important to resolve angled forces into component in an free diagram when applying newton's second law? a) to simplify masess b) to calculate acceleration c) to ignore friction d) to analyze motion in each direction

newton second law

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