MASTERPHYS:KNIGHT'S PHYSICS ACCESS+WKB
4th Edition
ISBN: 9780135245033
Author: Knight
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 11, Problem 43EAP
A particle of mass in is at rest at t = 0. Its momentum for t > 0 is given by px= 6t2kg m/s mis, where t is in s. Find an expression for Fx(t), the force exerted on the particle as a function of time.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A snowball is thrown with a speed of 42.0 km/h, giving it momentum with a magnitude of 2.00 Ns. The mass of the snowball, in grams, is what?
A) {Q}sı is the unit of Q in the Sl-
system. {Q}French is the unit of Q in
the cm-g-s-system. Momentum is velocity times mass. The
ratio, {Momentum}sı/{Momentum}French = 10". Calculate n
X-t graph
n=
B) The force acting on an object is a function of time: F(t)= a t2+b/t, wheret is time
measured in seconds and F is Force measured in Newtons.
a. What is the difference between Newtons and seconds in the Sl-system?
b. Calculate the dimensions of the constants, a and b:
c. Find the SI-unit of a?b
[a]=
[b]=
{a²b}si=
A body has a momentum of 80 kg m/s and a kinetic energy of 275 J. Determine the mass of the body.
Chapter 11 Solutions
MASTERPHYS:KNIGHT'S PHYSICS ACCESS+WKB
Ch. 11 - Prob. 1CQCh. 11 - Prob. 2CQCh. 11 - \A 2 kg object is moving to the right with a speed...Ch. 11 - Prob. 4CQCh. 11 - Prob. 5CQCh. 11 - Angie, Brad, and Carlos are discussing a physics...Ch. 11 - Prob. 7CQCh. 11 - Automobiles are designed with “crumple zones”...Ch. 11 - A golf club continues forward after hitting the...Ch. 11 - Suppose a rubber ball collides head-on with a more...
Ch. 11 - Two particles collide, one of which was initially...Ch. 11 - Two ice skaters, Paula and Ricardo, push off from...Ch. 11 - Prob. 13CQCh. 11 - At what speed do a bicycle and its rider, with a...Ch. 11 - What is the magnitude of the momentum of A 3000 kg...Ch. 11 - What impulse does the force shown in FIGURE EX11.3...Ch. 11 - What is the impulse on a 3.0 kg particle that...Ch. 11 - Prob. 5EAPCh. 11 - Prob. 6EAPCh. 11 - Prob. 7EAPCh. 11 - Prob. 8EAPCh. 11 - Prob. 9EAPCh. 11 - A sled slides along a horizontal surface on which...Ch. 11 - Prob. 11EAPCh. 11 - A g air-track glider collides with a spring at one...Ch. 11 - A 250 g ball collides with a wall. FIGURE EX11.13...Ch. 11 - A 5000 kg open train car is rolling on...Ch. 11 - Prob. 15EAPCh. 11 - Prob. 16EAPCh. 11 - Three identical train cars, coupled together, are...Ch. 11 - A 300 g bird flying along at 6.0 m/s sees a 10 g...Ch. 11 - Prob. 19EAPCh. 11 - A 1500 kg car is rolling at 2.0 m/s. You would...Ch. 11 - Prob. 21EAPCh. 11 - A 50 g marble moving at 2.0 m/s strikes a 20 g...Ch. 11 - A proton is traveling to the right at 2.0 × 107...Ch. 11 - Prob. 24EAPCh. 11 - Prob. 25EAPCh. 11 - Prob. 26EAPCh. 11 - Prob. 27EAPCh. 11 - Prob. 28EAPCh. 11 - Prob. 29EAPCh. 11 - Prob. 30EAPCh. 11 - Two particles collide and bounce apart. FIGURE...Ch. 11 - An object at rest explodes into three fragments....Ch. 11 - A 20 g ball of clay traveling east at 3.0 m/s...Ch. 11 - 34. At the center of a 50-m-diameter circular ice...Ch. 11 - A small rocket with 15 kN thrust burns 250 kg of...Ch. 11 - A rocket in deep space has an empty mass of 150 kg...Ch. 11 - A rocket in deep space has an exhaust-gas speed of...Ch. 11 - A tennis player swings her 1000 g racket with a...Ch. 11 - A 60 g tennis ball with an initial speed of 32 m/s...Ch. 11 - A 500 g cart is released from rest 1.00 m from the...Ch. 11 - A 200 g ball is dropped from a height of 2.0 m,...Ch. 11 - The flowers of the bunchberry plant open with...Ch. 11 - A particle of mass in is at rest at t = 0. Its...Ch. 11 - Air-track gliders with masses 300 g, 400 g, and...Ch. 11 - Most geologists believe that the dinosaurs became...Ch. 11 - Squids rely on jet propulsion to move around. A...Ch. 11 - A firecracker in a coconut blows the coconut into...Ch. 11 - One billiard ball is shot east at 2.0 m/s. A...Ch. 11 - a. A bullet of mass m is fired into a block of...Ch. 11 - Prob. 50EAPCh. 11 - An object at rest on a flat, horizontal surface...Ch. 11 - A 1500 kg weather rocket accelerates upward at 10...Ch. 11 - Prob. 53EAPCh. 11 - Two 5 g blocks of wood are 2.0 m apart on a...Ch. 11 - A 100 g granite cube slides down a 40°...Ch. 11 - You have been asked to design a “ballistic spring...Ch. 11 - In FIGUREP11.57, a block of mass m slides along a...Ch. 11 - The stoplight had just changed and a 2000 kg...Ch. 11 - Prob. 59EAPCh. 11 - Force Fx= (10 N) sin (2pt/4.0 s) is exerted on a...Ch. 11 - A 500 g particle has velocity vx=5.0 m/s at t = 2...Ch. 11 - 30 ton rail car and a 90 ton rail car, initially...Ch. 11 - Prob. 63EAPCh. 11 - Prob. 64EAPCh. 11 - Prob. 65EAPCh. 11 - Old naval ships fired 10 kg cannon balls from a...Ch. 11 - A proton (mass 1 u) is shot toward an unknown...Ch. 11 - The nucleus of the polonium isotope 214Po (mass...Ch. 11 - Prob. 69EAPCh. 11 - A 20 g ball of clay traveling east at 2.0 m/s...Ch. 11 - Prob. 71EAPCh. 11 - Prob. 72EAPCh. 11 - Prob. 73EAPCh. 11 - a. To understand why rockets often have multiple...Ch. 11 - Prob. 75EAPCh. 11 - Prob. 76EAPCh. 11 - Prob. 77EAPCh. 11 - In Problems 75 through 78 you are given the...Ch. 11 - A 1000 kg cart is rolling to the right at 5.0 m/s....Ch. 11 - Prob. 80EAPCh. 11 - Prob. 81EAPCh. 11 - A two-stage rocket is traveling at 1200 m/s with...Ch. 11 - 83. The air-track carts in FIGURE P11.83 are...Ch. 11 - Section 11.6 found an equation for vmaxof a rocket...
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 object has a kinetic energy of 314 J and a momentum of magnitude 25.4 kg · m/s. (a) Find the speed of the object. m/s (b) Find the mass of the object. kgarrow_forwardAn object has a kinetic energy of 304 J and a momentum of magnitude 24.7 kg · m/s. Answer parts a-b.arrow_forwardAn object has a kinetic energy of 256 J and a momentum of magnitude 24.6 kg · m/s. (a) Find the speed of the object.m/s(b) Find the mass of the object.kgarrow_forward
- In which case is the momentum of a particle of mass m and velocity v O a. W=Fx (Nm) O b. p=mv (kgm/s) O c. W=mv (kgm/s?) and the unit of momentum correctly given in the SI system? O d. P=ma (gcm/s³) O e. P-F/dt (N/s)arrow_forwardPls asaparrow_forwardFor how long should a force of 52 N be applied to change the momentum of an object by 9 kg.m/s?arrow_forward
- Which one of the following is true concerning momentum? The momentum of an object is always positive. Momentum and impulse are measured in the same units. The SI unit of momentum is kg • m2/s. Momentum is a scalar quantity. Momentum is a force.arrow_forwardA 2.91 kg particle has a velocity of (3.08 î - 3.95 j) m/s. (a) Find its x and y components of momentum. P. = 8.608 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. kg-m/s P, =|-11.4945 v kg•m/s (b) Find the magnitude and direction of its momentum. 20.643 Your response differs from the correct answer by more than 10%. Double check your calculations. kg-m/s 309.84 x ° (clockwise from the +x axis)arrow_forwardAn atomic nucleus suddenly bursts apart (fission) into two pieces. Piece A with mass mA travels to the left with a speed of vA. Piece B with mass mB travels to the right with speed vB. Show the velocity of piece B in terms of mA, mB and VA.arrow_forward
- What is the mass of a mallard duck whose speed is 8.8 m/s and whose momentum has a magnitude of 12 kg*m/s?arrow_forward9.1 x 10-31 kg) is accelerated from rest to a speed of 2 x 108 Extra: An electron (mass : m/s in 1 second. (a) What is the momentum of the electron when it has reached this speed? (b) What was the average force needed to accelerate the electron to this speed? (c) Suppose the same force as in (b) continues to act on the electron, how fast will it be 0.5 s later? (What, if anything, can you conclude from your results? Do they make sense?)arrow_forwardDuring a car collision, the knee, thighbone, and hip can sustain a force no greater than 4000 NN. Forces that exceed this amount could cause dislocations or fractures. Assume that in a collision a knee stops when it hits the car's dashboard. Also assume that the mass of the body parts stopped by the knee is about 20% of the total body mass. The person with a mass of 90 kgkg is initially traveling at 18 m/sm/s (40 mi/hmi/h). What minimum stopping time interval in needed to avoid injury to the knee? What is the minimum stopping distance?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStax
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax
Momentum | Forces & Motion | Physics | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=DxKelGugDa8;License: Standard YouTube License, CC-BY