A rocket whose initial mass is  12,500 kg is in deep space and consumes fuel at a rate of  62.5 kg /s .  The speed of the exhaust gases relative to the rocket engine is  2,500 m/s.  What is the thrust of the engines in units of kilo-Newtons (kN)?

Q: 7) A block of mass m1 = 10.5 kg slides along a horizontal surface (with friction, \mu k = 0.32) a…

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Q: Determine the linear momentum of the 10kg block. а) 10 m/s 6 m b) 2 m/s c) 60 N 3 ms a5 100 N

A: In this question, we have to determine the linear momentum of the 10 kg block. We know Momentum…

Q: A BMW of mass 2.00 x 103 kg is traveling at 43.4 m/s. It approaches a 1.00 × 10° kg Volkswagen going…

A: In all collisions momentum remains conserved. We can use it to solve.

Q: A sodapop can is 25 cm tall and made of aluminum. It has a mass of 50 grams. The soda is currently…

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Q: 13) A 6m by 6m uniform square plate is attacked to an isosceles triangle with base 6m and height…

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Q: 2) A 20.0 g marble is dropped from rest onto the floor 1.96 m below. a) If the marble bounces…

A: mass of marble = 20 g m = 0.02 kg h = 1.96 m

Q: Fa M 2) Fa = 500 N and Hk = .310. The velocity of the block is 20 m/s. What is M? a) 25 kg b) 1519…

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Q: i) Two ice skaters are initially at rest on the ice, hands touching. the skater on the left has a…

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Q: The figure below is for a 5 kg object. v(m/s) 50.0 40.0 30.0 20.0 10.0 2.0 4.0 6.0 t(s) a) Find the…

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Q: The driver of a three wheeler with a speed of 36km/h sees a child in the middle of the road and…

A: Given :             Mass of three wheeler m = 400 kg             Mass of the driver m = 65 kg…

Q: A bullet with a mass of m1 =5·10-3 kg flies at a velocity of υ1 =400m/s from a rifle with a mass of…

A: initial momentum of the system (gun + bullet) = sum of final momentums of gun and bullet…

Q: A father and son are standing on an ice rink, and push off each other. What can you say about the…

A: Given , A father and son are standing on an ice rink, and push off each other. So initial momentum…

Q: 20 Find the center of mass of a thin plate covering the region between the x-axis and the curve y =…

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Q: An object of mass 2.3 kg is initially moving at 5 m/s. A constant force of 15N is applied to the…

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Q: Compare the momentum of a 2 kg cart moving at 10 m/s (to the right) with that of a 4 kg cart moving…

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Q: 16. What is the magnitude of the impulse exerted on an object vwhen force applied is F = 2.0 kg i-…

A: Given, Force=2i-3j+4 k Time=3.0s Now impulse=Fxt

Q: Find the center of mass of a rod of length L whose mass density changes from one end to the other…

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Q: The force shown in the force vs. time diagram in Figure P6.15 acts on a 1.5-kg object. Find (a) the…

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Q: 6. Find the center of mass of the region in the first quadrant bounded by the r-axis and the graph…

A: GIVEN f(x) = e-x

Q: For the next 2 questions, consider the following: A 0.4 kg cannonball is launched from a cannon. The…

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Q: 1. Determine the impulse exerted in each of the following conditions: a. a dynamics cart…

A: To find: Impulse exerted (a) Given:  Force (F) =25 N Time (t) = 3.2 seconds

Q: Determine the location of the center of mass of the system shown in the figure. 0.2 m 0.2 m 2 kg 3…

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Q: What is the force if Mass= 0.1697 kg Initial velocity: 0 m/s Time interval: 0.0791 s Final…

A: The expression for the 1st equation of motion is given as v=u+at Substituting the values in the…

Q: 139. A 10.-newton force to the east acts on an object for 0.010 second. What force to the east,…

A: Impulse is,

Q: Two persons A and B who are at rest on an ice skating rink, push each other so that A acquires a…

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Q: (a) Find the impulse of the force over the 5.00-s time interval.

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Q: A 0.25-kg ball moving in the +x-direction at 13 m/s is hit by a bat. Its final velocity leaving the…

A: u=13 m/s v= - 19 m/s   m=0.25 kg t=0.010 s a=(v-u)/t=(-19-13)/0.010 = -3200 m/s^2

Q: A rocket has initial mass of 25x10 kg of which 80 percent is the Q) fuel and the rest is payload. If…

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Q: 140. A 10.-newton force acts on an object for 0.010 sec- ond. What force, acting on the object for…

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Q: A 0.05 kg ball hits a tennis player with a horizontal speed of 30 m/s, and this player sends the…

A: Given  Mass of ball m=0.05 kg  Initial velocity u=-30i m/s Final velocity v=25i m/s

Q: An object of mass 400 kg is located at m is moving at a velocity of m/s. Two forces F₁ and F₂ are…

A: Given,mass , m = 400 kg Initial position, r0 = <86,-25,0>mInitial velocity,v0 =<6,-9,0>…

Q: An Athlete applies an average force of 680 N to a shuttlecock for 0.25 minutes. What is the…

A: Given data :- Average force F = 680 N time interval dt = 0.25 s here dt represents very short…

Q: 1- Three particles, each of mass m, are located at the corners of an equilateral triangle of side a,…

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Q: In a collision between two unequal masses, how does the impulse imparted to the smaller mass by the…

A: When collision occurs between two unequal mass, then the velocity of them is reversed. If two masses…

Q: 1. Calculate the location of center of mass of the system of 4 point masses as shown in the Figure.…

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Q: Impulse applied and final momentum acquired: Choose an answer A. they will never be the same B.…

A: We know, Impulse applied= Change in momentum i.e. I= Pf-Pi⇒I=mvf-vi where, m is the mass vf is the…

Q: 7) A force of 186 N acts on a 7.3-kg bowling ball for 0.40 s. What is the change in velocity of the…

A: Since more than 1 question is asked, a solution for the first one is provided here. Please upload…

Q: 50. Find the center of mass of the sector of central angle 200 (sym- metric with respect to the…

A: Refer to following figure :    Let us consider a small element Rdθ and calculate its mass.…

Q: What is the momentum of the cannon after firing a cannon ball with an initial momentum of 4,000 kg…

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Q: A soccer goalkeeper is standing in front of his side goal post an opposite side player shoots the…

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”