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 5-kg mass if it is accelerating at a rate of 6 m/sec
2
?
1.1 x 10
1
nts
1.2 x 10
0
nts
0 nts
3 x 10
1
nts
omit
Question 2
What is the magnitude of the frictional force present if a 5-kg mass being pulled by a horizontal force of 8 newtons towards the right experiences an acceleration of -2.4 m/sec
2
?
2.08 x 10
0
nts
1.2 x 10
1
nts
2 x 10
1
nts
6.67 x 10
-1
nts
omit
Question 3
A 5-kg mass experiences two vertical forces: 37.6 newtons pulling upward and 49 newtons pulling downward. What acceleration does the 5-kg mass undergo?
17.3 m/sec
2
-2.3 m/sec
2
-6.4 m/sec
2
11.4 m/sec
2
omit
Question 4
A 5-kg mass is being pulled towards the right with a rope that has a tension of 56 newtons at an angle of 29 degrees to the x-axis. If the surface is frictionless, what acceleration will the mass develop?
5.4 m/sec
2
9.8 m/sec
2
4.4 m/sec
2
11.2 m/sec
2
omit
Question 5
A 16-gram bullet travelling at 50 m/sec is fired into a tree. If the bullet is brought to a stop in a distance of 29 centimeters, what average resistive force did the tree exert upon it?
-8 x 10
-1
nts
-2.76 x 10
0
nts
-6.9 x 10
1
nts
-6.9 x 10
2
nts
Copyright © 1997-2018
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton