Science

PhysicsQ&A LibraryA 1 240.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 8 800.0 kg truck moving in the same direction at 20.000 m/s. The velocity of the car right after the collision is 18.000 m/s to the east. (a) What is the velocity of the truck right after the collision? (Give your answer to five significant figures.) m/s eastStart your trial now! First week only $4.99!*arrow_forward*

Question

A 1 240.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 8 800.0 kg truck moving in the same direction at 20.000 m/s. The velocity of the car right after the collision is 18.000 m/s to the east.

(a) What is the velocity of the truck right after the collision? (Give your answer to five significant figures.)

m/s east

(b) What is the change in mechanical energy of the car–truck system in the collision?

J

(c) Account for this change in mechanical energy.

Tagged in

Science

Physics

Find answers to questions asked by students like you.

Q: can u solve thıs questıon

A: Click to see the answer

Q: Find the direction of the magnetic field acting on the positively charged particle moving in the var...

A: To find: The direction of the magnetic field acting on the positively charged particle moving in the...

Q: The noise level in an empty examination hall is 42 dB. When 50 physics students are writing an exam,...

A: Click to see the answer

Q: A charge Q1 = 100 micro Coulomb is located at P (1, 2, 3) and a charge Q2= 2 micro Coulomb is locate...

A: Q1 = 100 x 10-6 C at P (1, 2, 3 ) Q2 = 2 x 10-6 C at R (0, 0, 0)

Q: 24. A 80 kg skier is moving at 10 m/s down a frictionless ramp. He has about 50 m left to go on a 30...

A: The total energy of the system will be the sum of potential energy and kinetic energy of the skier. ...

Q: Reference; Hooke's Law Lab On a plot of Applied Force (vertical axis) vs. Distance Stretched (horizo...

A: Hook's Law: As per Hook's law, the force on the spring can be calculated by multiplying the spring ...

Q: 04. An aneurysm forms in a small blood vessel through which blood travels at 3m/s. The radius of the...

A: Click to see the answer

Q: A single slit, of width 3.2*10-6 m, is illuminated with light of wavelength 349.0 nm.A screen is loc...

A: Click to see the answer

Q: A sled is given a shove up a frictionless 60° incline. It reaches a new plateau 10m higher than it w...

A: Say original velocity is u and final velocity is v therefore according to question: v=u2 Say potenti...

Q: At 20 degrees * C the carbon resistor in an electric circuit connected to a 5.0 V battery has a resi...

A: Click to see the answer

Q: The ceiling of an arena is 40 m above the floor. What is the minimum speed that a thrown ball would ...

A: The height traveled by a ball is, h=40 m When a ball reaches the highest point, the speed of the bal...

Q: An air-track glider attached to a spring oscillates with a period of 1.5s. At t = 0s the glider is 5...

A: Click to see the answer

Q: One technique for measuring the angle of a prism is A parallel beam of light is directed onto the ap...

A: To show: The angular separation of the two reflected beams is B=2A

Q: Two kids are playing with a ball standing on a platform with wheels .There is no friction between th...

A: mass of first kid (m) = 21 Kg mass of second kid ( M) = 310/9.8 = 31.63 kg mass of ball = 1.2 kg mas...

Q: A cube of edge length { = 6.0 cm is positioned as shown in the figure below. There is a uniform magn...

A: Click to see the answer

Q: A square coil of wire of side 3.20 cm is placed in a uniform magnetic field of magnitude 2.25 T dire...

A: The area of a square coil is, A=3.20 cm3.20 cm=0.032 m0.032 m=1.024×10-3 m2 The magnetic field is, B...

Q: A figure skater on frictionless ice stops moving and decides to throw a glove away. In doing so, the...

A: the figure skater stops moving , means the initial momentum = 0 kgm/s when the skater throws a glove...

Q: Find the net torque on the wheel in the figure below about the axle through O, taking a = 11.0 cm an...

A: Torque is given as, τ=rFsinθ

Q: An incline makes an angle of 30.0 degrees with the horizontal. (Static friction coefficent of the in...

A: Click to see the answer

Q: A magnetic field of magnitude 0.280 T is oriented perpendicular to the plane of a circular loop. ...

A: Click to see the answer

Q: Anthony is just relaxing since its summer vacation and actually put on some weight too and is now 90...

A: Click to see the answer

Q: A centrifuge in a medical laboratory rotates at an angular speed of 3,450 rev/min. When switched off...

A: Click to see the answer

Q: What happens to the gravitational force of attraction between two objects if you triple the distance...

A: Gravitational force of attraction between two objects is directly proportional to masses of both obj...

Q: A rock is thrown vertically into the air and then caught at the same height. Describe the velocity, ...

A: Given, a rock is thrown vertically upwards with an initial speed vi into the air and then caught at ...

Q: Can i get help with this problem

A: Given : Acceleration due to gravity (g) = 3.71 m/s2 Pressure at the surface (P) = 145 kPa = 145 x 10...

Q: You have 45 grams of ice at -15 oC that you want to convert into steam at 115 oC. Find ΣQ.

A: Q=mCice∆Tice+mlf+mCwater∆Twater+mlv+mCsteam∆Tsteam=mCice∆Tice+lf+Cwater∆Twater+lv+Csteam∆Tsteam=45×1...

Q: 1. You are sitting on a surfboard that is riding up and down on some swells. The board's vertical di...

A: Click to see the answer

Q: In a hydraulic lift, if the radius of the smaller piston is 5.0 cm and the radius of the larger pist...

A: Given values: Radius of the small piston, r1=5.0 cm Radius of the large piston, r2=10.0 cm Force on ...

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: potential energy = 980000 Joules mass = 1000 kg using conservation of energy initial potential energ...

Q: Now take a neutron star that has twice the mass of the Sun but a radius of 10 km.What is the acceler...

A: mass of sun = 2 * 1030 kg mass of neutron star = 2 * 2 * 1030 kg = 4 * 1030 kg Radius = 10 km = 100...

Q: Q4) A radio station broadcasts at a frequency of 760 kHz. At a receiver some distance Jr. antenna, t...

A: The frequency of the wave f=760 kHz=760×103 Hz The magnetic field B=2.15×10-11 T The speed of electr...

Q: A 50.61 kg bicycle and rider accelerate at 1.22 m/s^2. What is the net force acting on the bicycle a...

A: The mass of a bicycle and rider is, m=50.61 kg The bicycle and rider's acceleration is, a=1.22 m/s2

Q: Consider Theorem 7.3, given below. If a constant force F is applied to an object, and the resulting ...

A: Given values: Magnitude of force, F=35 lb Displacement, d=70 ft Angle with horizontal, θ=25 °

Q: P2 P 2d (a) Find the magnitude and direction of the net magnetic field at a point midway between the...

A: a) Write the expression for net magnetic field due to two wires are pointed inwards of the page. B=...

Q: A weather balloon is designed to expand to a maximum radius of 15.6 m when in flight at its working ...

A: Click to see the answer

Q: A baseball with a mass of 0.145 kg is held 10m from the ground. What is the kinetic, potential, and ...

A: Click to see the answer

Q: A student holds a bike wheel and starts it spinning with an initial angular speed of 9.0 rotations p...

A: Given:The initial angular speed of the bike wheels is,ω0=9×2π=18π rad/sTime,t=10 s80 rotation to rad...

Q: An atomic nucleus suddenly bursts apart (fission) into two pieces. Piece A with mass ma travels to t...

A: Given data: Mass of piece A is mA travels with velocity vA Mass of piece B is mB travels with veloci...

Q: The mass of 1 cubic meter of fresh water is 1,000 kg. At the top of a 100 m hydroelectric dam the p...

A: Click to see the answer

Q: A particle moves along the x axis. It is initially at the position 0.280 m, moving with velocity 0.2...

A: "As per the guidelines i solved the first three subpart". (c) Find the angular frequency of the osci...

Q: In an engine, a piston oscillates with simple harmonic motion so thát its position varies according ...

A: (a) Oscillation relation of a piston executing simple harmonic motion xt=3.00 cmcos5t+π7 At t=0 Posi...

Q: two long parallel wires each of the same current (I) in the same direction, the total magnetic field...

A: At the given point P, the direction of the magnetic field due tot the upper wire is into the page. a...

Q: A current I = 30 A is directed along the positive x-axis and perpendicular to a magnetic field. A ma...

A: The current I=30 A (along x axis) Magnetic force per unit length FL=0.18 N/m (in -y direction) The m...

Q: Ans to the following questions

A: Five base quantities are: 1) Mass and its unit is kilogram 2) Time and its unit is seconds. 3) Lengt...

Q: A 62 kg trampoline artist jumps upward from the top of a platform with a vertical speed of 4.5 m/s. ...

A: Say u is the velocity as the artist velocity as he lands on trampoline. At top as the artist jumps u...