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 6 m/sec
^{2}
?
0 nts
1 x 10
^{0}
nts
3.6 x 10
^{1}
nts
1.2 x 10
^{1}
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 9 newtons towards the right experiences an acceleration of -2.5 m/sec
^{2}
?
2.4 x 10
^{1}
nts
2.4 x 10
^{0}
nts
6 x 10
^{-1}
nts
1.5 x 10
^{1}
nts
omit
Question 3
A 6-kg mass experiences two vertical forces: 21.1 newtons pulling upward and 58.8 newtons pulling downward. What acceleration does the 6-kg mass undergo?
-31.7 m/sec
^{2}
37.7 m/sec
^{2}
-6.3 m/sec
^{2}
13.3 m/sec
^{2}
omit
Question 4
A 6-kg mass is being pulled towards the right with a rope that has a tension of 63 newtons at an angle of 32 degrees to the x-axis. If the surface is frictionless, what acceleration will the mass develop?
3.3 m/sec
^{2}
5.6 m/sec
^{2}
10.5 m/sec
^{2}
8.9 m/sec
^{2}
omit
Question 5
A 18-gram bullet travelling at 60 m/sec is fired into a tree. If the bullet is brought to a stop in a distance of 32 centimeters, what average resistive force did the tree exert upon it?
-1.01 x 10
^{3}
nts
-1.01 x 10
^{2}
nts
-3.38 x 10
^{0}
nts
-1.08 x 10
^{0}
nts
Copyright © 1997-2017
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton