An object with a mass of #2 kg# is on a surface with a kinetic friction coefficient of # 7 #. How much force is necessary to accelerate the object horizontally at #28 m/s^2#?

1 Answer
Mar 16, 2016

Answer:

#F=193,34 N#

Explanation:

#F_"net"=m*a" "F_"net"=2*28=56 " "N#

#F_f=k.N " "N=m*g" Normal Force"#
#F_f=7*2*9,81" "F_f=137,34 N#
#F_"net"=F-F_f" "F_f":Friction Force"#
#56=F-137,34#
#F=56+137,34#
#F=193,34 N#