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 3 m/sec
^{2}
?
7 x 10
^{0}
nts
7.5 x 10
^{-1}
nts
1.2 x 10
^{1}
nts
0 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 10 newtons towards the right experiences an acceleration of 1.5 m/sec
^{2}
?
1.67 x 10
^{0}
nts
2.67 x 10
^{0}
nts
4 x 10
^{0}
nts
6 x 10
^{0}
nts
omit
Question 3
A 4-kg mass experiences two vertical forces: 19.5 newtons pulling upward and 39.2 newtons pulling downward. What acceleration does the 4-kg mass undergo?
14.7 m/sec
^{2}
19.7 m/sec
^{2}
-15.7 m/sec
^{2}
-4.9 m/sec
^{2}
omit
Question 4
A 4-kg mass is being pulled towards the right with a rope that has a tension of 70 newtons at an angle of 27 degrees to the x-axis. If the surface is frictionless, what acceleration will the mass develop?
7.9 m/sec
^{2}
17.5 m/sec
^{2}
7.6 m/sec
^{2}
15.6 m/sec
^{2}
omit
Question 5
A 20-gram bullet travelling at 90 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?
-3 x 10
^{2}
nts
-1.8 x 10
^{0}
nts
-3 x 10
^{3}
nts
-6.67 x 10
^{0}
nts
PhysicsLAB
Copyright © 1997-2024
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton