Practice Problems
Net F = ma
Directions:
On this worksheet, positive horizontal directions are towards the right and positive vertical directions are upwards.
omit
Question 1
What is the net force acting on a 6-kg mass if it is accelerating at a rate of 5 m/sec
^{2}
?
3 x 10
^{1}
nts
1.1 x 10
^{1}
nts
8.33 x 10
^{-1}
nts
0 nts
omit
Question 2
What is the magnitude of the frictional force present if a 6-kg mass being pulled by a horizontal force of 11 newtons towards the right experiences an acceleration of -1.17 m/sec
^{2}
?
7.02 x 10
^{0}
nts
5.13 x 10
^{0}
nts
1.57 x 10
^{0}
nts
1.8 x 10
^{1}
nts
omit
Question 3
A 6-kg mass experiences two vertical forces: 37.2 newtons pulling upward and 58.8 newtons pulling downward. What acceleration does the 6-kg mass undergo?
21.6 m/sec
^{2}
16.0 m/sec
^{2}
-3.6 m/sec
^{2}
-15.6 m/sec
^{2}
omit
Question 4
A 6-kg mass is being pulled towards the right with a rope that has a tension of 77 newtons at an angle of 42 degrees to the x-axis. If the surface is frictionless, what acceleration will the mass develop?
12.8 m/sec
^{2}
8.6 m/sec
^{2}
0.9 m/sec
^{2}
9.5 m/sec
^{2}
omit
Question 5
A 22-gram bullet travelling at 40 m/sec is fired into a tree. If the bullet is brought to a stop in a distance of 42 centimeters, what average resistive force did the tree exert upon it?
-4.19 x 10
^{2}
nts
-4.19 x 10
^{1}
nts
-8.8 x 10
^{-1}
nts
-2.1 x 10
^{0}
nts
Copyright © 1997-2018
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton