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 3-kg mass if it is accelerating at a rate of 6 m/sec
^{2}
?
2 x 10
^{0}
nts
1.8 x 10
^{1}
nts
9 x 10
^{0}
nts
0 nts
omit
Question 2
What is the magnitude of the frictional force present if a 3-kg mass being pulled by a horizontal force of 11 newtons towards the right experiences an acceleration of -0.33 m/sec
^{2}
?
9.09 x 10
^{0}
nts
1.11 x 10
^{1}
nts
1.2 x 10
^{1}
nts
9.9 x 10
^{-1}
nts
omit
Question 3
A 3-kg mass experiences two vertical forces: 21.4 newtons pulling upward and 29.4 newtons pulling downward. What acceleration does the 3-kg mass undergo?
8.0 m/sec
^{2}
16.9 m/sec
^{2}
-2.7 m/sec
^{2}
-5.0 m/sec
^{2}
omit
Question 4
A 3-kg mass is being pulled towards the right with a rope that has a tension of 77 newtons at an angle of 40 degrees to the x-axis. If the surface is frictionless, what acceleration will the mass develop?
19.7 m/sec
^{2}
16.5 m/sec
^{2}
3.2 m/sec
^{2}
25.7 m/sec
^{2}
omit
Question 5
A 22-gram bullet travelling at 90 m/sec is fired into a tree. If the bullet is brought to a stop in a distance of 40 centimeters, what average resistive force did the tree exert upon it?
-2.23 x 10
^{3}
nts
-2.23 x 10
^{2}
nts
-1.98 x 10
^{0}
nts
-4.95 x 10
^{0}
nts
PhysicsLAB
Copyright © 1997-2024
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton