Question #9be7f

1 Answer
Sep 17, 2016

Answer:

#m = 1# #"kg"#

#a = 20# #"m s"^(- 2)#

Explanation:

We must first use the fact that weight is the product of mass and gravitational acceleration: #W = m g#

#=> 9.8# #"N"# #= m cdot 9.8# #"m s"^(- 2)#

#=> 9.8# #"kg" cdot "m s"^(- 2)# #= m cdot 9.8# #"m s"^(- 2)#

#=> m = 1# #"kg"#

Then, using #F = m a#:

#=> 20# #"N"# #= 1# #"kg"# #cdot a#

#=> 20# #"kg" cdot "m s"^(- 2)# #= 1# #"kg"# #cdot a#

#=> a = 20# #"m s"^(- 2)#