1 2 3 1. Calculate the distance a laborer can push a 20.0 kg cart, with a 62N force at 30.0° horizontalangle, if he can do 2920 J of work?2. calculate the work needed to lift a 20. kg sack of rice vertically at 6.5 m?3. If a miniature engine does 520. J of work to cause a car in motion with a distance of 260, m,how much force does it exert?4. if Jane pushes John on his sled with a force of 300. N for 750. m. How much work is needed ifthe force of friction acting on the sled is (a) 200. N. (b) 300. N?5. A metal ball weighing 6kg which is moving at 4.0 m/s hits another ball of the same mass andsticks to it. The two is now moving at 2.0 m/s.(a) What is the KE of the 1" metal ball before it hits?(b) What is the KE of the 1 metal ball after it hits?(c) What is the KE of the 2nd ball after being hit?(d) How much energy does the metal ball lose in the collision?(e) How much kinetic energy does the putty ball gain in the collision?(f) What happened to the rest of the energy?FINAL ANSWER1.2.3.4.5. a)b)c)e)SOLUTION: (Use additional sheet if necessary, please staple or glue it)

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1. Calculate the distance a laborer can push a 20.0 kg cart, with a 62N force at 30.0° horizontal angle, if he can do 2920 J of work?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Fluid Kinematics

The branch of science that deals with objects which are either in motion or stationary are studied under the branch of classical mechanics. Fluid mechanics is a subcategory of classical mechanics that deals with the behavior of fluids at rest (fluid statics) or in motion (posing some velocity). In fluid kinematics, studies focus on the associated motion of fluid particles or groups of particles, and its associated parameters like displacements, velocity, and acceleration without concerning about the forces that caused the motion. All the laws of classical mechanics are applied in the study of fluid kinematics.

Question

1 2 3

1. Calculate the distance a laborer can push a 20.0 kg cart, with a 62N force at 30.0° horizontal
angle, if he can do 2920 J of work?
2. calculate the work needed to lift a 20. kg sack of rice vertically at 6.5 m?
3. If a miniature engine does 520. J of work to cause a car in motion with a distance of 260, m,
how much force does it exert?
4. if Jane pushes John on his sled with a force of 300. N for 750. m. How much work is needed if
the force of friction acting on the sled is (a) 200. N. (b) 300. N?
5. A metal ball weighing 6kg which is moving at 4.0 m/s hits another ball of the same mass and
sticks to it. The two is now moving at 2.0 m/s.
(a) What is the KE of the 1" metal ball before it hits?
(b) What is the KE of the 1 metal ball after it hits?
(c) What is the KE of the 2nd ball after being hit?
(d) How much energy does the metal ball lose in the collision?
(e) How much kinetic energy does the putty ball gain in the collision?
(f) What happened to the rest of the energy?
FINAL ANSWER
1.
2.
3.
4.
5. a)
b)
c)
e)
SOLUTION: (Use additional sheet if necessary, please staple or glue it)

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