Science

PhysicsQ&A LibraryA car's bumper is designed to withstand a 5.04-km/h (1.4-m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force on a bumper that collapses 0.225 m while bringing a 820-kg car to rest from an initial speed of 1.4 m/s.Start your trial now! First week only $4.99!*arrow_forward*

Question

A car's bumper is designed to withstand a 5.04-km/h (1.4-m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance.

Calculate the magnitude of the average force on a bumper that collapses 0.225 m while bringing a 820-kg car to rest from an initial speed of 1.4 m/s.

Tagged in

Science

Physics

Find answers to questions asked by students like you.

Q: The lowest frequency in the FM radio band is 88.0 MHz. (a) What inductance is needed to produce this...

A: Click to see the answer

Q: (a) Calculate the force needed to bring a 1100 kg car to rest from a speed of 90.0 km/h in a distanc...

A: mass of car = 1100 kg initial speed = 90km/hr = 90 * 5/18 = 25 m/sfinal speed = 0 m/sdistance = 12...

Q: A proton moves in the –x-direction and encounters a uniform magnetic field pointing in the +x-direct...

A: the magnetic force can be expressed as F=qvBsinθ

Q: Show that when a 3.0-kg book is lifted 2.0 m its increase in gravitational potential energy is 60 J.

A: Click to see the answer

Q: Can i get help with these questions

A: The mass of the steel hull, m = 29000 kg The density of the hull (steel), ρhull = 7860 kg/m3 The den...

Q: The proper length of one spaceship is three times that of another. The two spaceships are traveling ...

A: Consider The proper length of slower spaceship is "L" The proper length of faster spaceship "3L"The ...

Q: A deep sea diver should breathe a gas mixture that has the same oxygen partial pressure as at sea le...

A: Partial pressure of oxygen is (20.9/100)*1.01*105 N/m2 = 2.12*104 N/m2

Q: The driver of a car traveling down the interstate slams on the brakes, causing the car to skid to re...

A: We can use equations of kinematics to calculate time taken by car to stop. Equations of kinematics a...

Q: 5. An aviation fuel used by a piston engine aircraft transforms 100,042 J of energy through the foll...

A: Energy produced by aviation fuel ( Input energy) = 100042 JHeat produced by vapourization = 46721 Jh...

Q: A bicycle tire is spinning clockwise at 2.00 rad/s. During a time period Δt = 1.70 s, the tire is st...

A: Given: A bicycle tire is spinning clockwise initially at ωi=-2.00 rad/s (negative sign for spinning...

Q: What is the peak power consumption of a 120-V AC microwave oven that draws 10.0 A?

A: Given- Vrms = 120 V Irms = 10.0 A

Q: A rock of density 2500kg/m^3 with volume 0.002m^3 falls from rest in a viscous medium. The rock is a...

A: Click to see the answer

Q: #2 and how u got the answer pls

A: Net Heat transferred is zero Qgained=QlostmiCiceTm-Ti+miLf+miCwTeq-Tm=msLv+mscwTs-Teqms=miCiceTm-Ti+...

Q: Ticker Tape Diagram Case A Case B Greatest velocity change? Greatest acceleration? Greatest momentum...

A: Click to see the answer

Q: A 1kg cannon ball is fired horizontally with an initial velocity of 5m/s. If the cannon was atop a w...

A: Given: Mass of a canon m = 1 kg. Velocity of firing canon v = 5 m/s. height of canon h = 20 m.

Q: Two identical of 3.00 X 10 23.9a. The len 0 is 5.00°. Find

A: The length of the string L=0.150 m The mass of each sphere m=3.00×10-2 kg The free body diagram of ...

Q: A mass m = 4.25 kg is at the end of a horizontal spring on a frictionless horizontal surface. The ma...

A: The expression for mechanical energy is, E=12kA2 (I) k=spring ...

Q: What would the separation between two identical objects, one carrying 9 C of positive charge and the...

A: According to Coulomb's law of electrostatics, Force between two point charges q and Q separated by a...

Q: as) that of steel. 3. Most substances (exp contract) on cooling. 4. A bimetallic strip is used as a ...

A: Heat is a form of energy which produces hotness or coldness in a body Where as Temperature is degree...

Q: The chains suspending a child's swing are 2.80 m long. At what frequency should a big brother push t...

A: Length of the chain is L=2.80 m Acceleration due to gravity is g=9.80 ms2

Q: The duration of a photographic flash is related to an Rc time constant, which is 0.100 µs for a cert...

A: Given data: Time constant, τ = 0.1 μs = 1×10-7 s Resistance of flash lamp is R = 0.0400 Ω The relati...

Q: A large wrecking ball is held in place by two light steel cables. If the massm of the wrecking ball ...

A: Click to see the answer

Q: What determines the severity of a shock? Can you say that a certain voltage is hazardous without fur...

A: First of all we know that a contact with live wire gives shock and burn. And due to fault heavier fi...

Q: When a certain ball is dropped from a height h,.it rebounds to height 0.4h. If this ball is droppedf...

A: Original height = 10 ft = 120 inch New height after rebound = 0.4 H Final height = less than 6 inch...

Q: For an RLC series circuit, R = 120N, L = 100 mH, and C = frequency is connected to the circuit, at w...

A: Click to see the answer

Q: At what speed (in m/s) is the magnitude of a particle's relativistic momentum 15.3% larger than its ...

A: Let relativistic momentum is P' and classical momentum is P. we have to find speed for which P' = 15...

Q: Part B: What is the energy of the system when in its excited state, in units of eV?

A: Click to see the answer

Q: If the Earth's mass is reduced by half of her original mass, but the radius of her remains the same,...

A: Click to see the answer

Q: Calculate the effective resistance of a pocket calculator that has a 1.35-V battery and through whic...

A: Given quantities: potential difference (V) = 1.35 V current flowing (i) = 0.2 mA Let, the effecti...

Q: An astronaut with a mass of 84kg is at rest in space, before firing her water pack to move towards t...

A: Given data The mass of the astronaut is ma = 84 kg. The initial velocity of water and astronaut is ...

Q: 2. Explain these apparent violations of the Conservation Laws. (a) Two asteroids of equal mass and o...

A: a) let mass of each asteroid = m let speed of each asteroid = v direction of each asteroid is opposi...

Q: Problem The coefficient of friction between blocks is us = 0.4, at what angle will the block start s...

A: Click to see the answer

Q: (a) A large rotating flywheel uniformly increases in angular speed from rest to 0.210 rev/s in 26.0 ...

A: a. in rotational mechanics, equation of motion for the given case can be expressed as ω=ω0+αt

Q: A granite ball of radius 3.00 m and emissivity 0.048 is heated to 120°C. (c) If the ambient temperat...

A: Click to see the answer

Q: Consider a person standing on a scale in an elevator. If the elevator accelerates upwards with an ac...

A: Mass of the person is m = 98.1 kg Acceleration due to gravity is g = 9.8 m/s2 and it acts in the dow...

Q: An object was released from rest at a certain height. It took the object 5 seconds to reach the grou...

A: Click to see the answer

Q: Checkpoint 1 The figure gives six overhead views of a uniform rod on which two or more forces act pe...

A: Static equilibrium: Two conditions: (a) The vector sum of the external forces on the rigid object eq...

Q: Consider a parallel plate capacitor with metal plates, each of square shape of 1.00 m on a side, sep...

A: Area of the plates= A= 1 m2 Separation between the plates = d= 1 mm =10-3 m Therefore Capacitance w...

Q: The coefficient of friction between blocks is us = 0.4, at what angle will the block start sliding i...

A: Coefficient of friction = 0.4Mass = m angle of incline = θInitial speed = 0 ( at rest )

Q: An Atwood's machine consists of blocks of masses m1 = 13.0 kg and m2 = 22.0 kg attached by a cord ru...

A: m1 = 13 kg m2 = 22 kg M = 6.6 Kg r = 0.2 m