You are the design engineer in charge of the crashworthinessof new automobile models. Cars are tested by smashing theminto fixed, massive barriers at 45 km/h A new model of mass1500 kg takes 0.15 s from the time of impact until it is broughtto rest. (a) Calculate the average force exerted on the car bythe barrier. (b) Calculate the average deceleration of the carin g’s.

Q: The stoplight had just changed and a 2100 kg Cadillac had entered the intersection, heading north at…

A: Solution is in step 2.

Q: An object collides with a wall that uses a force of F(t)= -20t-5 (N), on the object. The object…

A:

Q: Mass m - 2 is arttached to a rope 0.35m long and is released when the rope is horizon tal its path m…

A:

Q: A car (m=1250kg) going 7.0 m/s strikes a resting car (m=900kg) the collide in an inelastic…

A: The expression for inelastic collision is m1v1+m2v2=m1+m2v Rearrange v=m1v1+m2v2m1+m2

Q: A 60-kg archer stands at rest on frictionless ice and fires a 0.50-kg amTOw horizontally at 50 m/s,…

A: Given  Mass of man M=60kg  Mass of arrow m=0.5 kg  speed of arrow u=50m/s

Q: A biker is traveling on level ground at 43.0 m/s with a combined mass of 340.0 kg. She spots a…

A: Given data: Initial velocity (v0) = 43.0 m/s Final velocity (v) = v0/2 =  21.5 m/s Time (t) = 18.0 s…

Q: Consider a 945-kg car initially moving at 28 m/s. What is the velocity of the car, in meters per…

A:

Q: During an automobile crash test, the average force exerted by a solid wall on a 2500-kg car that…

A: mass, m = 2500 kg  Force, F = 740000 N  time, t = 0.22 s  final velocity, v = 0

Q: A 0.53-kg billiard ball initially at rest is given a speed of 12 m>sduring a time interval of 4.0…

A:

Q: Most of us know intuitively that in a head-on collisionbetween a large dump truck and a subcompact…

A: The sum of the momentum before and after collision is same. In a totally inelastic collision the…

Q: An astronaut of mass 210 kg including his suit and jet packwants to acquire a velocity of  2.0 m/s…

A:

Q: 4. What is the velocity of hockey player #2 (80 kg) after he is checked by player #1 (85 kg) who…

A:

Q: A crate with mass m, is moving alonga frictionless Srface 0tspeed lo mb. It elasticaly collides…

A: During collision only internal forces of a system are involved so momentum of system remains…

Q: Two objects with equal mass leaves colored marks on a frictionless surface every time interval of T.…

A: Given: Both objects has same mass and leaving the spot of specific color after a certain time…

Q: A 0.030-kg bullet is fired vertically at 200 m/s into a 0.15-kgbaseball that is initially at rest.…

A: Given data:Mass of the bullet, m = 0.030 kgSpeed of the bullet, u = 200 m/sMass of the baseball, M =…

Q: What is the average momentum of a 70.0-kg sprinter who runs the 100-m dash in 9.65 s?

A:

Q: You are holding a shopping basket at the grocery store with two0.62-kg cartons of cereal at the left…

A: Given,

Q: 9. A tennis player returns a 30.0 m/s serve straight back at 25.0 m/s, after making contact with the…

A: Given data:  Initial velocity (Vi) = -30.0 m/s Final velocity (Vf) = 25.0 m/s Time interval (Δt) =…

Q: The same two carts with mA = 4mB and initially at rest, are subjected to the same force %3D acting…

A: Write the expression for the impulse-momentum theorem for the final kinetic energy of the cart of…

Q: A 20.00 kg lead sphere is hanging fram a hook by a thin wire 2.00m long and it is free to swing in a…

A:

Q: A bullet of mass m is fired into ablock of mass M initially at rest at the edgeof a frictionless…

A: First calculate the initial speed of projectile motion when Block+Bullet starts falling Since there…

Q: An bullet ofmass m = 8.00 g isfired into a blockof mass M = 250 gthat is initially atrest at the…

A:

Q: locity V(0) and in the +x direction. Find the velocity of the object after t=0 in terms of (b, m, g,…

A:

Q: Two automobiles of equal mass approach an intersection.One vehicle is traveling with velocity 13.0…

A:

Q: A Maxim Machine gun fires 445 Bullets per minute. Each bullet has a mass of 13g And a velocity of…

A:

Q: #1

A: (1)According to the law of conservation of linear momentum, the two momentums are inclined at an…

Q: During the 2007 French Open, Venus Williams hit the fastest recorded serve in a premier women’s…

A: Given:  mass, m = 0.057 kg initial speed, u = 58 m/s  final speed, v = - 58 m/s  time, t = 5 ms =…

Q: A boy of mass mb and his girlfriend of mass mg, bothwearing ice skates, face each other at rest…

A: Let the initial velocity of the boy be denoted as v1 and the initial velocity of the boy be denoted…

Q: A 3000 kg truck travelling at 50 m/s strikes a stationary 1000 kg car, locking the two vehicles…

A: Given data:  Mass of truck (m1) = 3000 kg Initial velocity of truck (v1) = 50 m/s Mass of car (m2) =…

Q: A Maxim machine gun fires 466 bullets per minute. Each bullet has a mass of 14g and a velocity of…

A:

Q: You’re playing pool and you line up a shot on the 3 ball. You want the 3 ball to be deflected by…

A: Given, Using the conservation of momentum in the horizontal direction,

Q: Please see attached. Thank you

A: Given

Q: Two trucks drive directly away from oneanother on a straight line,  . The trucksdrive with their…

A:

Q: Two hockey players collide on the ice and go down together in a tangled heap. Player I has a mass of…

A:

Q: A 20.0-g bullet with an initial horizontal velocity of vjj strikes and is immediately embedded in a…

A:

Q: elght of the remaining soda at any given instant, find x when the center of mass reaches its lowest…

A: C) The mass of soda filled to a height x can be given as, Here, m and H represent the soda’s mass…

Q: What is the velocity of a 900-kg car initially moving at 30.0 m/s, just after it hits a 150-kg deer…

A:

Q: A bul‎let of mass m=7.500 [g] is fir‎ed horizon‎tally with a sp‎eed v=549 [m/s] into the bo‎b of a…

A: Apply the momentum conservation equation and substitute the required values.

Q: A Maxim machine gun fires 453 bullets per minute. Each bullet has a mass of 12g and a velocity of…

A: Answer Given data  Rate of emerging the bullets = 453 per minute = 453/60 = 7.55 per second Mass of…

Q: A ball impinges direcly upon another ball at reu and is itself reduced to rest b y the impact. If…

A: Givenu2 =0v1 =0Half of the initial kinetic energy is lost due to collision

Q: In a collision between two cars, which would you expect tobe more damaging to the occupants: if the…

A: Collision of two cars

Q: You’re an accident investigator at a scene where a drunk driver in a 2200 kg car has plowed into a…

A: Consider the given data, m1=2200 kgm2=1400 kg Here, d=20 m and u=0.78 Consider the speed of cars…

Q: A 730-N man stands in the middle of a frozen pond of radius5.0 m. He is unable to get to the other…

A: Given:Weight of the man = 730 NRadius of the pool = 5 mMass of the physics book = 1.2 kgVelocity of…

Q: car of mass m traveling at speed v crashes into the rear of a truck of mass 2m that isat rest and in…

A: To find the speed of the combined car and the truck after the collision