Find speed of wagon after rock is thrown directly forward

Assignment Help Physics
Reference no: EM13563911

A wagon is rolling forward on level ground. Friction is negligible.The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 91 kg. The mass of the rock is0.30 kg. Initially the wagon is rolling forward at a speed of 0.52m/s. Then the person throws the rock with a speed of 15 m/s. Both speeds are relative to the ground. Find the speed of the wagon after the rock is thrown(a) directly forward in one case and (b) directly backward in another.

Reference no: EM13563911

Questions Cloud

Which metal will have the higher final temperature : Equal amounts of heat are added to equal masses of iron andsilver at the same initial temperature. Which metal will have the higher final temperature?
Transferred to thermal energy of the strip by the electron : In the figure below, a battery of potential difference V = 13 V is connected to a resistive strip of resistanceR = 7.0 Ω. When an electron moves through the stripfrom one end to the other, (a) in which directionin the figure does the electron move..
What rateis electrical energy transferred to thermal energy : A 120 V potential difference is applied to a space heater whoseresistance is 12 Ω when hot. (a) At what rateis electrical energy transferred to thermal energy?(b) What is the cost in cents for 6.0 h at US5.0¢/kW·h?
Detrmine the drift speed of the conduction electrons : A rectangular sample of a metal is 3.8 cm wide and 600 µm thick. When it carries a 30 Acurrent and is placed in a 0.8 T magnetic field it produces a 6.5µV Hall emf. Detrmine the drift speed of the conduction electrons.
Find speed of wagon after rock is thrown directly forward : A wagon is rolling forward on level ground. Friction is negligible.The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 91 kg. The mass of the rock is0.30 kg.
Determine the electric potential energyof this group : Four identical charges (+2.0 μC each)are brought from infinity and fixed to a straight line. The chargesare located 0.40 m apart. Determine the electric potential energyof this group.
Ball presses against the wall with a force of magnitude : The 600-N ball shown is suspended on a string AB and rests againsta frictionless vertical wall. The string makes an angle of 30? with the wall. The ball presses against the wall with a force of magnitude:
Velocity of first cart when second cart was still at rest : A 2.5-kg cart is rolling along a frictionless, horizontaltrack towards a 1.5-kg cart that is held initially at rest. Thecarts are loaded with strong magnets that cause them to attract oneanother. Thus, the speed of each cart increases.
Moving particle encounters external electric field : A moving particle encounters an external electric field that decreases its kinetic energy from 9520 eV to 7060 eV as the particle moves from position A to position B. the electric potential at A is -55.0V and the electric potential at B is +27.0V.

Reviews

Write a Review

Physics Questions & Answers

  Calculate at which time the aircraft launches

The catapult on an aircraft carrier can take an aircraft from 0 to 216 mph in 8 seconds, at which time the aircraft launches

  How much gasoline is burned during each cycle

A gasoline engine in a large car takes in 10,500J of heat and delivers 2450J of mechanical work per heat cycle. How much gasoline is burned during each cycle

  Compute the final speed of both vehicles after the collision

A 685 kg car stopped at an intersection is rear-ended by a 1470 kg truck moving with a speed of 12.5 m/s. find the final speed of both vehicles after the collision

  Find the direction of the acceleration of the object

Only two forces act on an object (mass=4.61 kg), as in the drawing. Find the direction (relative to the x axis) of the acceleration of the object

  What is the wavelength of the third harmonic of vibration

A wire 4 m long and with a mass of 0.5 g is under a tension of 112N. It is made out of the material aluminum. (a)What is the speed of transverse waves in the wire

  How many revolutions do the tires make

An automobile with 0.200 m radius tires travels 70,000 km before wearing them out. How many revolutions do the tires make

  In a two-slit interference pattern

In a two-slit interference pattern, the intensity at the peak of the central maximum is I_zero. I/I_zero = 0.772 if this helps Part B What is the path difference for light with a wavelength of 477 nanometers from the two slits at a point where the ph..

  Illustrate what is the coefficient of kinetic friction

Sam's speed at the bottom is 35.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?

  What was the tension in the string an instant

A 200 g ball on a 55-cm-long string is swung in a vertical circle about a point 200 cm above the floor. What was the tension in the string an instant

  Assuming the magnetic flux is uniform over the area of coil

A 4mm diameter circular coil of 25 turns and total resistance 0.001Ω lies in the x-y plane at a distance of 3m from a long straight current-carrying wire along the x-axis.

  Determine what is the distance he traveled

A runner is practicing on a circular track that is 675 m in circumference. If he runs halfway around the track and stops at the farthest eastern point of the track, what is the distance he traveled

  What is the velocity of the wreckage just after the collison

A 1200kg car (A) traveling due north at 25m/s collides with a 2000kg truck traveling due west at 18m/s. What is the velocity of the wreckage just after the collison

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd