Problema Solution
Suppose that a force of
100 N
results in an acceleration of
10 /ms2
. If the force is changed to
70 N
, what will the object's acceleration become?
Answer provided by our tutors
According to Newton's Second Law of Motion, the force (F) acting on an object varies directly with the object's acceleration (a), that is, F = ma, where m is the mass.
In our case:
F1 = 100 N
a1 = 10 m/s^2
F2 = 70 N
a2 = ?
F1/a1 = F2/a2
100/10 = 70/a2
70/a2 = 10
a2 = 70/10
a2 = 7 m/s^2
The object's acceleration is 7 m/s^2.