A block moving horizontally on a smooth surface with a speed of 40 m/s splits into two parts with masses in the ratio of 1:2. If the smaller part moves at 60 m/s in the same direction, then the fractional change in kinetic energy is :-
Q: Problem 4: During an ice show, a 62.5-kg skater leaps into the air and is caught by an initially…
A: Mass (m1)= 62.5kg. U1 = 3.8m/s Mass (m2) = 67.5kg. U2= 0m/s
Q: An object with mass 818 grams is thrown at an angle with initial speed 2.45 m/s on a level field.…
A:
Q: A 5.50-kg object is initially moving so that its x-component of velocity is 6.00 m/s and y-component…
A: Given,mass m=5.50kgvx=6m/svy=-1.90m/sv=vx2+vy2 |v|=62+(1.90)2=6.29m/s(a) kinetic energy…
Q: A 15 g bullet traveling parallel to an inclined ramp strikes a 2.74 kg block of wood and becomes…
A:
Q: 4) Consider an 80 kg man and 320 kg horse both running along a road with the same kinetic energy.…
A: 4) given data , m = 80kg and M =320 kg. 5) mA= 2 kg and mB = 3 , VA = (5 2) and vB = (10 8) 6) we…
Q: A 61g ball traveling at 6.3 m/s is caught by a 220g pendulum bob. The center of mass of the pendulum…
A: The objective of the question is to calculate the gravitational potential energy of the…
Q: A 0.550 kg ball of Play-Doh hangs from the ceiling by a string. A 0.095 kg wad of Play-Doh is thrown…
A: If external force acting on body is zero, Then from Newton's 2nd law F=dPdt=0…
Q: y X Consider a Cart rolling down hill with no friction. Only include the cart's energy and momentum…
A:
Q: Two blocks of mass m1 and m2 (m1>m2) slide on a frictionless floor and have the same kinetic energy…
A: The given data we have:Mass m1>m2Both blocks same kinetic energyThe objective is to find the…
Q: A ball (mass 0.25 kg) is attached to a string of length 26 cm (Figure 8-39). The ball is raised so…
A:
Q: A film of a long jumper shows that his center of mass rose 96 cm from launch point to the top of the…
A:
Q: Two ice skaters begin at rest then push off each other on very smooth ice and glide away with…
A:
Q: A 4.00 g bullet travelling horizontally with a magnitude of 440 m/s is tired into a wooden block…
A:
Q: A billiard ball of mass 0.18 kg is uniformly accelerated from rest and travels 162 cm in 0.9 s.…
A: The mass of the billiard ball is m = 0.18 kg. The initial velocity of the billiard ball is u = 0…
Q: How fast would a(n) 77 kgkg man need to run in order to have the same kinetic energy as an 8.0 gg…
A: Write the equation for the kinetic energy. KE=12mv2 Here, The mass of the object is "m" The speed of…
Q: At a carnival, you can try to ring a bell by striking a target with a 10.1-kg hammer. In response, a…
A: Since 24.8% of the hammer's kinetic energy goes into raising the gravitational potential energy of…
Q: A hammer held horizontally is allowed to swing down with the end of the handle held in place. The…
A: Given that : Weight of the hammer = 2 kg Ignoring the mass of the handle = 0.6 m After swinging down…
Q: Tennis balls are tested by being dropped from a height of 2.5 m onto a concrete floor. The 57 g ball…
A: Gravitational potential energy is due to the position of an object. Taking the ground to be th…
Q: A 5.70-kg object is initially moving so that its x-component of velocity is 6.00 m/s and y-component…
A: Here, we have to calculate the Kinetic energy and change in kinetic energy
Q: A 0.90-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of…
A: From the expression for work-energy theorem W=Fdcosθ Here, θ is the angle between the direction of…
Q: A 0.80-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of…
A:
Q: A 0.017-kg bullet is fired into a stationary block of wood of mass of 5.5 kg. The relative speed of…
A:
Q: A 0.018-kg bullet is fired into a stationary block of wood of mass of 5.1 kg. The relative speed of…
A:
Q: Galactic Alliance Junior Mission Officer (GAJMO) Bundit Nermalloy is predicting the kinetic energy…
A: Given that the initial kinetic energy KE₁ = 2.7 × 10^11 J, the force F = −3.5 × 10^6 N and the…
Step by step
Solved in 2 steps with 2 images
- A railroad car of mass 2.55 104 kg is moving with a speed of 3.94 m/s. It collides and couples with three other coupled railroad cars, each of the same mass as the single car and moving in the same direction with an initial speed of 1.97 m/s. (a) What is the speed of the four cars after the collision? (Round your answer to at least two decimal places.) (b) How much mechanical energy is lost in the collision?A 0.40kg block initially at rest on frictionless horizontal surface is acted upon by a force of 3.0 N for a distance of 5.0 m. How much kinetic energy does the block gain in Joules?A running man has half the kinetic energy of a boy half his mass. The man speeds up by 1.0m/s and then has the same kinetic energy as the boy. What were the original speeds of (a) the man and (b) the boy?
- Galactic Alliance Junior Mission Officer (GAJMO) Bundit Nermalloy is predicting the kinetic energy of a supply spacecraft, which is being moved in one dimension in the tractor beam of the ship named the Jadarian-Ruby, to ensure that the supply spacecraft doesn't damage the spaceport to which it is being delivered. GAJMO Nermalloy has been instructed to deliver the supply spacecraft with a kinetic energy less than 10 10 J (where 1 J = 1 N · m). GAJMO Nermalloy knows that the change in kinetic energy of an object moving in one dimension is equal to the net work performed on it, where net work is the integral of the component of net force in the direction of motion with respect to the position of the of the object. That is: KE2 – KE₁ = √²²² F(x) dx. == Րաշ x1 The net force exerted by the tractor beam is supposed to be constant, Fo −3.5 × 106 N, but due to improper maintenance of the Jadarian-Ruby, the actual force exerted by the tractor beam as a function of position x is given by F(x) =…A 6.30-kg object is initially moving so that its x-component of velocity is 6.00 m/s and y-component of velocity is -1.60 m/s. (a) What is the kinetic energy of the object at this time? (b) Find the change in kinetic energy of the object it its velocity changes so that its new x-component is 8.50 m/s and its new y-component is 5.00 m/s.A 0.60-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 5.0 N for a distance of 5.0 m. How much farther would the force have to act for the block to have 64 J of kinetic energy?
- A father racing his son has 1/2 the kinetic energy of the son, who has 1/2 the mass of the father. The father speeds up by 1.8 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?Tarzan (80 kg) drops from a height of 2.5 m to swing down and pick up Jane. If he picks up Jane (60 kg) with an inelastic collision, determine the following. The velocity just before picking up Jane. (7.1 m/s) The velocity just after picking up Jane. (4.04 m/s) The percentage of energy lost when picking up Jane. (43%) The height (h), after picking up Jane. (0.82 m)Two cars are moving. The first car has twice the mass of the second car, but only half as much kinetic energy. Then, both cars increase their speed by 8.00 m/s. They then have the same kinetic energy. The original speeds of the two cars are, respectively, 22.6 m/s, v2 = 11.3 m/s. (A) V1 = 5.66 m/s, v2 = 11.3 m/s. V1 = 14.1 m/s, v2 = 7.07 m/s. V1 = 11.3 m/s, v2 = 5.66 m/s.
- Problem 6: A space vehicle of mass m=300 kg has a speed v=1000 m/s along the positive x-direction. At some instant, it separates into two pieces, with mass m1=100 kg and m2=200 kg. The first piece moves with a speed of 600 m/s at an angle of 300 relative to the x-axis. (a) The speed of the second piece is ________ (b) The kinetic energy of the second piece after the explosion is __________Thanks to recent satellite data, we know that the North American continent is drifting westward at a speed of about 1cm/yr. We can assume that the solid part of a continent is about 50 kilometers thick. Estimate the kinetic energy that the continental US has as a result of this motion.A father racing his son has 1/2 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.3 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?