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 4-kg mass if it is accelerating at a rate of 6 m/sec
^{2}
?
2.4 x 10
^{1}
nts
1.5 x 10
^{0}
nts
0 nts
1 x 10
^{1}
nts
omit
Question 2
What is the magnitude of the frictional force present if a 4-kg mass being pulled by a horizontal force of 11 newtons towards the right experiences an acceleration of -1.25 m/sec
^{2}
?
2.2 x 10
^{0}
nts
3.2 x 10
^{0}
nts
1.6 x 10
^{1}
nts
5 x 10
^{0}
nts
omit
Question 3
A 4-kg mass experiences two vertical forces: 60.9 newtons pulling upward and 39.2 newtons pulling downward. What acceleration does the 4-kg mass undergo?
25.7 m/sec
^{2}
5.4 m/sec
^{2}
25.0 m/sec
^{2}
21.7 m/sec
^{2}
omit
Question 4
A 4-kg mass is being pulled towards the right with a rope that has a tension of 77 newtons at an angle of 27 degrees to the x-axis. If the surface is frictionless, what acceleration will the mass develop?
19.3 m/sec
^{2}
17.2 m/sec
^{2}
8.4 m/sec
^{2}
8.7 m/sec
^{2}
omit
Question 5
A 22-gram bullet travelling at 70 m/sec is fired into a tree. If the bullet is brought to a stop in a distance of 27 centimeters, what average resistive force did the tree exert upon it?
-2 x 10
^{3}
nts
-1.54 x 10
^{0}
nts
-2 x 10
^{2}
nts
-5.7 x 10
^{0}
nts
Copyright © 1997-2017
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton