Answered: An object with a mass of 20 kg is…

An object with a mass of 20 kg is dropped from a height of 30 meters. Find the change in kinetic energy when it is 5 meters above the ground and its velocity at this height.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter6: Energy Of A System

Section: Chapter Questions

Problem 8CQ

See similar textbooks

Related questions

Q: If an object is dropped from 10 m above the ground, what is the height at which it’s kinetic energy…

A: Given that the object is dropped from a height of 10m above the ground.The question is to find at…

Q: How fast must be the 4.0 kg basketball thrown upward to achieve the same potential energy of 160 J?

A: Given: The mass of the object is 4 kg. The potential energy of the object is 160 J.

Q: A 1.0kg rock is dropped from a height of 6.0m. At what height is the rock’s kinetic energy twice its…

A: The velocity of the rock is, Thus, the kinetic energy is,

Q: an object is dropped from a height of 12 m. At what height is its kinetic energy and its potential…

Q: You toss a stone of mass m straight upward with kinetic energy K. If the stone reached a maximum…

Q: A boy throws a ball of mass 0.25kg straight upward with an initial speed of 20m/s When the ball…

Q: A 1.0-kg rock is dropped from a height of 6.0 m. At what height is the rock’s kinetic energy twice…

Q: a 6.0 kg rock is dropped from a height of 3.0 m. At what height is the rocks kinetic energy twice…

A: Given , m = 6kg h = 3 m height at which rocks kinetic energy twice its…

Q: A 2-kg ball is held 6 m above the ground. Relative to the ground its potential energy is A) 60 J.…

A: Given data: Mass (m) = 2 kg Height (h) = 6 m Required: Potential energy relative to the ground

Q: A speak takraw ball with mass 8.4 kg was thrown with an initial upward velocity component of 6.7 m/s…

Q: A rock with a mass of 2.40 kg is moving with velocity (6.40î − 2.40ĵ) m/s. What is the…

A: 1) Determine the kinetic energy of the rock.

Q: A ball of 7 kg has velocity given by ü = ( 6 î - 5 ĵ + 2 k ) m/s What is the kinetic energy? Answer…

A: Mass of the ball is m = 7 kg velocity of the ball is v = 6i - 5j +2k

Q: A 55 kg student traveling in a car with a constant velocity has a kinetic energy of 1.6 104 J. What…

A: Write the mass of the student. m=55 kg Write the kinetic energy. KE=1.6×104 J

Q: Find the potential energy gained by a body of mass 25 kg, if it is raised by 5 m. (use g = 10 m/s2)…

A: The given values with suitable variables are listed below. Here, m denotes the mass, h denotes the…

Q: A 9.0 kg rock is dropped from a height of 9.0 m. At what height is the rock's kinetic energy twice…

Q: How many joules of kinetic energy does a 750 kg automobile travelling at a typical highway speed of…

A: Given, Mass of automobile,m=750 kg Speed of automobile,v=65 mi/h=29 m/s Final speed of car, vf=v2

Q: The mass of 1 cubic meter of fresh water at the top of a 100 m hydroelectric dam is 1,000 kg and it…

A: Given: The mass of the water is m=1000 kg. The height of the dam is h=100 m. The volume of water is…

Q: A car is moving with a kinetic energy of 80 J and is slowed down and stopped in a distance of 0.05…

A: Given data The kinetic energy of the car is KEi = 80 J. The final velocity of the car is zero as it…

Q: A 5.0 kg object is moving at 3 m/s? By what factor does its kinetic energy change if its mass is…

A: Write the given values with the suitable variables. m1=5 kgv=3 m/sm2=m12=5 kg2=2.5 kg Here, m1, v,…

Q: In a "pop fly a 1.5 x 10^2 g baseball is projected vertically upward with an initial kinetic energy…

Q: A car travelling at a speed of 60 km/h has a kinetic energy of 200 kJ. If the speed of the car is…

A: Given data The initial velocity of the car is given as u = 60 km/h. The initial kinetic energy of…

Q: If an object with a Potential Energy of 1000 is dropped from rest, how much Kinetic Energy would it…

A: The initial potential energy of an object,

Q: Find the kinetic energy (in J) possessed by a body of mass 10 kg moving with a velocity of 5 m/s. A)…

A: (given) Mass (m) of a body = 10 kg Velocity (v) of a body = 5 m/s Kinetic energy of body =12×mass…

Q: A quarterback throws a football weighing 205 g at a speed of 10.0 km/h at a height of 20.0 m. What…

A: Given,A quaterback throws a footballweighing, m = 205 g = 0.205 kgspeed, v = 10.0 km/h = 2.78…

Q: A 28 kg child on a swing is traveling at 4.2 m/s and has 315 J of total mechanical energy. What is…

Q: A 2.8 kg object is dropped, from rest, from a height of 15.5 m above the ground. Assuming…

Q: You throw a 2.3 kg ball straight up into the air and catch it again in your hands. Where in the…

A: The potential energy of an object is given by the equation: P = mgh where "m" is the mass of the…

Q: A 50-kg platform diver hits the water below with a kinetic energy of 5000 Joules. The height…

A: Given: mass, m = 50 kg kinetic energy, K = 5000 J g = 10 m/s/s

Q: At what speed does a 1000 kg compact car have the same kinetic energy as a 20,000 kg truck going 25…

A: Given: The mass of car is 1000 kg. The mass of truck is 20000 kg. The speed of car is 25 km/h.

Q: A certain truck has twice the mass of a car. Both are moving at the same speed. If the kinetic…

A: Given data: Mass of truck = 2 × mass of car Speed of the truck and car is same. The kinetic energy…

Q: What is the kinetic energy of a 1.2 x 10°kg car whose velocity is 35 Km/hr?

A: Given value--- mass = 1.2 kg. velocity = 35 km/h. We have to find--- kinetic energy?

Q: Consider a ball thrown straight up in air. At what position is its kinetic energy at a maximum?…

A: The speed of the ball decreases at a constant rate equal to acceleration due to gravity and becomes…

Q: Krishna is quite skilled at skateboarding and moves across the sidewalk at a fast pace of 4 m/s. If…

A: The expression for the kinetic energy is written as, Here, m and v represent the mass of Krishna…

Q: How high up is a 3200-kg plane if it has 960000 J of potential energy?

A: Potential energy = mgh

Q: A toy rocket with a mass of 368 grams is launched into the air using a spring. At the apex of the…

Q: A 0.300 kg billiard ball is propelled from a table at a horizontal speed of 1.50 m/s. If the table…

Q: A ball of mass 0.80 kg is dragged in the upward direction on an inclined plane. What is the height…

Q: A car travelling at a speed of 60 km/h has a kinetic energy of 200 kJ. If the speed of the car is…

Q: Calculate the kinetic energy in Joule, of a car of mass 1700kg travelling at 95km/h.

Q: At the time of throwing a ball up, it has acquired the kinetic energy of 30 J. To what height it…

A: According to energy conservation law, total energy imust reamin the same. At the initial point,…

Q: A 3.79-kg box is thrown vertically downward with a speed of 8.92 m/s from a height of 10.37 m.…

A: Q. Given that Mass of the box m = 3.79 kg Initial speed of the box v = 8.92 m/s Initially, the box…

Q: An object which weighs 10 N is dropped from rest from a height of 4 meters above the ground. When it…

A: The potential energy at the beginning of the fall is

Q: The dome at Monticello is 13.6 m high. If a pebble with a mass of 15g is thrown horizontally from…

A: From the conservation of energy:

Q: A 5.0 kg object is moving at 4 m/s? By what factor does its kinetic energy change if its mass is…

A: GIVEN: m= 5kg v= 4m/s Kinetic energy: Kinetic energy is the energy that an item or particle has as…

Question

please show complete solution

An object with a mass of 20 kg is
dropped from a height of 30 meters.
Find the change in kinetic energy when
it is 5 meters above the ground and its
velocity at this height.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

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.

Similar questions

An electron in a television tube is accelerated uniformly from rest to a speed of 8.4107 m/s over a distance of 2.5 cm. What is the power delivered to the electron at the instant that its displacement is 1.0 cm?
A particle of mass 2.0 kg moves under the influence of the force F(x)=(3/x)N. If its speed at x=2.0 m is v=6.0 m/s, what is its speed at x = 7.0 m?
A baseball of mass 0.25 kg is hit at home plate with a speed of 40 m/s. When it lands in a seat in the left-field bleachers a horizontal distance 120 m from home plate, it is moving at 30 m/s. If the ball lands 20 m above the spot where it was hit, how much work is done on it by air resistance?
A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile) and encounters an average frictional force of 1200 N. What is its average power output in watts and horsepower if this takes 7.30s?
Check Your Understanding What are the values of the gravitational potential energy of the hiker at the base, and sea level, with respect to a sea-level zero of potential energy?
A person drops a pebble of mass m1from a height h, and it hits the floor with kinetic energy K. The person drops another pebble of mass m2, from a height of 2h , and it hits the floor with the same kinetic energy K. How do the masses of the pebbles compare?
One particle has mass mand a second particle has mass 2m . The second particle is moving with speed vand the first with speed 2v . How do their kinetic energies compare?
Two forces act to double the speed of a particle, initially moving with kinetic energy of 1 J. One of the forces does 4 J of work. How much work does the other force do?
Check Your Understanding Fend the forces on the particle in Example 8.6 when kinetic energy is 1.0 J at x=0.
Using energy considerations and assuming negligible air resistance, show that a rock thrown from a bridge 20.0 m above water with an initial speed of 15.0 m/s strikes the water with a speed of 24.8 m/s independent of the direction tin own. (Hint. show that (Ki+Ui=Kf+Uf)
A particle of mass 2.0 kg moves under the influence of the force F(x)=(5x2=7x)N . Suppose a frictional force also acts on the particle. If the particle’s speed when it starts at x=4.0 m is 0.0 m/s and when it arrives at x=4.0 m is 9.0 m/s, how much work is done on it by the frictional force between x=4.0 m and x=4.0 m?
Can the power expended by a force be negative?