Question #9e417

1 Answer

Mar 14, 2017

#6s#

Explanation:

Using Newton's Second law of Motion
#F=ma#
Solving for acceleration and inserting given values we get
#a=F/m#
#=>a=-50/20=-2.5ms^-2#
#-ve# sign indicates that it is a retarding force.

Now using the kinematic equation
#v=u+at#
#0=15-2.5t#
#=>t=15/2.5=6s#

Answer link

Impact of this question

2168 views around the world

You can reuse this answer
Creative Commons License

Science

Math

Humanities

... and beyond

Question #9e417

1 Answer

Explanation:

Related questions

Impact of this question