A force acts on an object of mass 1.5kg at rest for 0.5s. After the force stops acting the object travels a distance of 5m in 2s. hence the magnitude of the force will be?
1 Answer
Jul 4, 2017
Explanation:
We're asked to find the magnitude of the net force acting on the object.
We know:
-
initial velocity
#v_(0x) = 0# (at rest) -
mass
#m = 1.5# #"kg"# -
time
#t = 0.5# #"s"# -
final velocity
#v_x = (5color(white)(l)"m")/(2color(white)(l)"s") = 2.5# #"m/s"#
Let's use the kinematics equation
to find the acceleration. Plugging in known values, we have
The net force