(a) Explanation Kinetic energy is the energy associated with the motion of a particle. Write the expression for kinetic energy of a particle. K = 1 2 m v 2 (I) Here K is the kinetic energy, m is mass of the particle and v is velocity of the particle. Write the expression for the vector form of velocity. v → = v x i ^ + v y j ^ Here, v → is the velocity vector, v x is the magnitude of velocity component in x direction, v y is the magnitude of velocity component in y direction, i ^ is the unit vector in x direction and j ^ is the unit vector in y direction. Write the expression for themagnitude of velocity. | v | → = ( v x ) 2 + ( v y ) 2 (II) Substitute ( v x ) 2 + ( v y ) 2 for v in equation (I) (b) To determine The net work done on the object.

Physics for Scientists and Engineers with Modern, Revised Hybrid (with Enhanced WebAssign Printed Access Card for Physics, Multi-Term Courses)

9th Edition

ISBN: 9781305266292

Author: Raymond A. Serway, John W. Jewett

Publisher: Cengage Learning

See similar textbooks

Concept explainers

Kinematics

A machine is a device that accepts energy in some available form and utilizes it to do a type of work. Energy, work, or power has to be transferred from one mechanical part to another to run a machine. While the transfer of energy between two machine par…

Kinetic Energy and Work-Energy Theorem

In physics, work is the product of the net force in direction of the displacement and the magnitude of this displacement or it can also be defined as the energy transfer of an object when it is moved for a distance due to the forces acting on it in the d…

Videos

Question

Chapter 7, Problem 31P

(a)

To determine

The kinetic energy of object.

(b)

To determine

The net work done on the object.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 7, Problem 30P

Chapter 7, Problem 32P

Students have asked these similar questions

Four point-like charges are placed as shown in the figure, three of them are at the corners and one at the center of a square, 36.0 cm on each side. What is the electric potential at the empty corner? Let q1=q3=+26.0 µС, q2=-28.0 μC, and q4=-48.0μc V

PLS HELp

Please solve and answer the question correctly please. Thank you!!

Chapter 7 Solutions

Physics for Scientists and Engineers with Modern, Revised Hybrid (with Enhanced WebAssign Printed Access Card for Physics, Multi-Term Courses)

Ch. 7.2 - Prob. 7.1QQ Ch. 7.2 - shows four situations in which a force is applied...Ch. 7.3 - Which of the following statements is true about...Ch. 7.4 - A dart is inserted into a spring-loaded dart gun...Ch. 7.5 - A dart is inserted into a spring-loaded dart gun...Ch. 7.6 - Choose the correct answer. The gravitational...Ch. 7.6 - A ball is connected to a light spring suspended...Ch. 7.8 - What does the slope of a graph of U(x) versus x...Ch. 7 - Prob. 1OQ Ch. 7 - If the net work done by external forces on a...

Ch. 7 - Prob. 3OQ Ch. 7 - A cart is set rolling across a level table, at the...Ch. 7 - Let N represent the direction horizontally north,...Ch. 7 - Prob. 6OQ Ch. 7 - Prob. 7OQ Ch. 7 - As a simple pendulum swings back and forth, the...Ch. 7 - Bullet 2 has twice the mass of bullet 1. Both are...Ch. 7 - Prob. 10OQ Ch. 7 - If the speed of a particle is doubled, what...Ch. 7 - Prob. 12OQ Ch. 7 - Prob. 13OQ Ch. 7 - A certain spring that obeys Hookes law is...Ch. 7 - A cart is set rolling across a level table, at the...Ch. 7 - Prob. 16OQ Ch. 7 - Can a normal force do work? If not, why not? If...Ch. 7 - Object 1 pushes on object 2 as the objects move...Ch. 7 - Prob. 3CQ Ch. 7 - (a) For what values of the angle u between two...Ch. 7 - Prob. 5CQ Ch. 7 - Discuss the work done by a pitcher throwing a...Ch. 7 - Prob. 7CQ Ch. 7 - Prob. 8CQ Ch. 7 - Prob. 9CQ Ch. 7 - Prob. 10CQ Ch. 7 - Prob. 11CQ Ch. 7 - Prob. 12CQ Ch. 7 - Prob. 13CQ Ch. 7 - Cite two examples in which a force is exerted on...Ch. 7 - A shopper in a supermarket pushes a cart with a...Ch. 7 - Prob. 2P Ch. 7 - In 1990, Walter Arfeuille of Belgium lifted a...Ch. 7 - The record number of boat lifts, including the...Ch. 7 - A block of mass m = 2.50 kg is pushed a distance d...Ch. 7 - Spiderman, whose mass is 80.0 kg, is dangling on...Ch. 7 - Prob. 7P Ch. 7 - Vector A has a magnitude of 5.00 units, and vector...Ch. 7 - Prob. 9P Ch. 7 - Find the scalar product of the vectors in Figure...Ch. 7 - Prob. 11P Ch. 7 - Using the definition of the scalar product, find...Ch. 7 - Prob. 13P Ch. 7 - Prob. 14P Ch. 7 - A particle is subject to a force Fx that varies...Ch. 7 - In a control system, an accelerometer consists of...Ch. 7 - When a 4.00-kg object is hung vertically on a...Ch. 7 - Prob. 18P Ch. 7 - Prob. 19P Ch. 7 - Prob. 20P Ch. 7 - Prob. 21P Ch. 7 - Prob. 22P Ch. 7 - Prob. 23P Ch. 7 - Prob. 24P Ch. 7 - A small particle of mass m is pulled to the top of...Ch. 7 - The force acting on a particle is Fx = (8x 16),...Ch. 7 - When different loads hang on a spring, the spring...Ch. 7 - Prob. 28P Ch. 7 - Prob. 29P Ch. 7 - Review. The graph in Figure P7.20 specifies a...Ch. 7 - Prob. 31P Ch. 7 - Prob. 32P Ch. 7 - A 0.600-kg particle has a speed of 2.00 m/s at...Ch. 7 - A 4.00-kg particle is subject to a net force that...Ch. 7 - A 2 100-kg pile driver is used to drive a steel...Ch. 7 - Review. In an electron microscope, there is an...Ch. 7 - Review. You can think of the workkinetic energy...Ch. 7 - Prob. 38P Ch. 7 - Review. A 5.75-kg object passes through the origin...Ch. 7 - A 1 000-kg roller coaster car is initially at the...Ch. 7 - A 0.20-kg stone is held 1.3 m above the top edge...Ch. 7 - Prob. 42P Ch. 7 - A 4.00-kg particle moves from the origin to...Ch. 7 - Prob. 44P Ch. 7 - A force acting on a particle moving in the xy...Ch. 7 - Prob. 46P Ch. 7 - Prob. 47P Ch. 7 - Prob. 48P Ch. 7 - Prob. 49P Ch. 7 - Prob. 50P Ch. 7 - Prob. 51P Ch. 7 - For the potential energy curve shown in Figure...Ch. 7 - A right circular cone can theoretically be...Ch. 7 - The potential energy function for a system of...Ch. 7 - Prob. 55AP Ch. 7 - A particle moves along the xaxis from x = 12.8 m...Ch. 7 - Prob. 57AP Ch. 7 - Prob. 58AP Ch. 7 - Prob. 59AP Ch. 7 - Why is the following situation impossible? In a...Ch. 7 - Prob. 61AP Ch. 7 - Prob. 62AP Ch. 7 - An inclined plane of angle = 20.0 has a spring of...Ch. 7 - Prob. 64AP Ch. 7 - Prob. 65AP Ch. 7 - A particle of mass m = 1.18 kg is attached between...Ch. 7 - Prob. 67CP

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

The kinetic energy of object.

Solution Summary: The author explains the kinetic energy of a particle. Write the expression for the vector form of velocity.

Concept explainers

Videos

The kinetic energy of object.

The net work done on the object.

Want to see the full answer?

Chapter 7 Solutions