Jennifer, who has a mass of 50 kg, is riding at 35 m/s in her red sports car when she must suddenly slam on the brakes to avoid hitting a deer crossing the road. She strikes the airbag that brings her body to a stop in 0.5 seconds. What average force does the seat belt exert on her? If Jennifer had not been wearing her seat belt and not had an airbag, then the windshield would have stopped her head in 0.002 seconds. What average force with the windshield have exerted on her?

Q: A rock of mass m = 1.9 kg is released from a height of h = 3.2 m into a basin of water. At a time of…

A:

Q: A 3.50 x 105 kg tugboat is traveling south at 4.20 m/s and attaches itself to a stationary barge…

A: Given: The mass of the tugboat is 3.5x105 kg. The initial velocity of the tugboat is 4.2 m/s toward…

Q: If the answer to the previous problem was 8.00 i kg m/s (because the initial velocity of the ball…

A: We know that  Impulse = change in momentum  Favg×t= change in momentum  Favg=change in momentum/t

Q: V Two boys, with masses m1=25 kg and m2=50 kg, stand on a cart with mass m3=25 kg moving to the…

A:

Q: Apache Chief is walking at 2.03 m/s.  If the chief weighs 827 N, what is the magnitude of his…

A: Given that: Velocity of apache chief = 2.03 m/s Weight of chief = 827 N Gravity = 9.8 m/s

Q: A car heading north collides at an intersection with a truck heading east. Truck and car have equal…

A: Given data: The mass of car and truck is m. The speed of car-truck system is v=28 m/s. The…

Q: A cue stick hits a cue ball with an average force of 28.0 N for a duration of 0.0280 s. If the mass…

A: Answer:-  Given  Initial velocity ball (u) = 0 m/s  Force (F) = 28.0 N  Mass of the ball (m) = 0.160…

Q: Perfectly Inelastic Collision BEFORE AFTER m1=1300 kg m2=1900 kg m1=1300 kg m2=1900 kg V1=24 m/s…

A: Given data:  The masses of the objects  m1 = 1300 kg and m2 = 1900 kg Initial velocities  V1 = 24…

Q: An amateur golfer swings a golf club, striking a golf ball that has a mass of 55.0 g. The club is in…

A: Write the expression for the magnitude of the average force on the ball

Q: A golf ball of mass 0.045 kg is hit off the tee at a speed of 45 m/s. The golf club was in contact…

A:

Q: A lab mouse of mass m= 0.0487 kg is placed on an air track cart of mass m1= 0.433 kg. The mouse and…

A:

Q: You hold glider AA of mass 0.125 kgkg and glider BB of mass 0.375 kgkg at rest on an air track with…

A:

Q: An office worker smacks a table, bringing his hand to rest in 0.0025 seconds from an initial speed…

A:

Q: LA 3 kg steel ballI falls down vertically and strikes a floor with a speed of 12 m/s. It bounces off…

A: Given data:  Mass (m) = 3 kg Initial velocity (Vi) = -12 m/s Final velocity (Vf) = +12 m/s Time…

Q: An arrow with a mass of 250 g has a speed of 27 m/s before it passes through a 1.5 cm piece of…

A: MA = Mass = 250 g = 0.250 Kg , Vi = Velocity = 27 m/s T = d = thickness = 1.5 cm = 0.015 m Vf =…

Q: A stone of mass m = 1.55 kg is dropped from a height of h = 3.9 m into a pool of water. At a time of…

A: Mass of stone (m) = 1.55 kg Initial height (h) = 3.9 m t = 1.9 s

Q: Two ice skaters suddenly push off against one another starting from a stationary position. The 45-kg…

A: Given data:  Initially two ice skaters are at rest Mass of first skater (m1) = 45 kg Speed of first…

Q: A 0.38 kg volley ball is traveling at 34 m/s when its hit back over the net by an opposing player…

A: We need to apply the concept of Conservation of energy . The acceleration generated due to the…

Q: A tall man walking at 1.10 m/s accidentally bumps his head of mass 3.07 kg on a steel doorjamb. His…

A: Initial speed (u) = 1.1 m /s mass of steel doorjamb = 3.07 kg t = 0.019sec Final velocity (V) = 0…

Q: ching aing position of the steel ball are at the same height. (y; =Yf) The mass of the steel ball is…

A: Data  We have the mass of steel ball,m=45g The angle at which the ball is releases=55o Initial…

Q: (b) At what speed in m/s would an 8.00 kg trash can have the same momentum as the truck? (Enter a…

A:

Q: reviews the approach that is necessary for solving problems such as this one. A baseball (m = 148 g)…

A:

Q: A 1.2 kg ball is falling in the -y direction at a speed of 25 m/s. The ball strikes the floor and…

A: The ball's mass is, m=1.2 kg The change in the velocity of a ball is, Δv=10--25 m/s=35 m/s The time…

Q: రికంగ్ డ్ A hockey puck with mass 0.150 kg is sitting at rest on frictionless ice when it is struck…

A:

Q: An open train car, with a mass of 2190 kg, coasts along a horizontal track at the speed 2.17 m/s.…

A: Let us calculate the car speed v, as shown below:

Q: A bullet of mass m = 8.00 g is fired into a block of mass M = 250 g that is initially at rest at the…

A: Mass of bullet (m) = 8 g mass of block (M) = 250 g height of table (h) = 1 m horizontal distance…

Q: Question 3-c, Numerical: Consider the collision of a bouncing tennis ball with a wall as sketched in…

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Q: A 65.0 kg  diver, dives horizontally off a 375 kg raft initially at rest. If the diver's speed…

A:

Q: Realizing that he could not drive up a 35.0°, ice-covered hill because there was no friction, Rick…

A: SOlution: Given that m1 = 4x102 kg m2 = 2x103 kg v2 = 20 m/s

Q: tennis ball of mass 60.0 g is traveling with horizontal velocity vx = −32.0 m/s when it encounters a…

A:

Q: A tennis ball is flying east towards the wall with a speed of 41.3 m/s. After bounced against the…

A:

Q: A 15 kg tuna fish moving horizontally to the right at 5 m/s swallows a 2 kg dalagang bukid that is…

A:

Q: 3. A 4.80 kg fish is swimming at 1.00 m/s to the right. He swallows a 1.50 kg fish swimming toward…

A: From conservation of energy, the initial momentum is equal to the final momentum.

Q: Two blocks with masses m1 = 0.20 kg and m2 = 0.60 kg start at opposite ends of a frictionless…

A: Given data: The mass of blocks are, m1=0.2 kg m2=0.6 kg The initial height of block 1 is h1=36…

Q: A 25 kg wood box is sliding across a wood surface, experiencing a coefficient (u) of kinetic…

A: Given- Mass of block (m) = 25 Kg Kinetic Friction (μ) = 0.20 Applied force (F) = 63 N

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

A:

Q: A 0.0055-kg shuttlecock moving to the left with a speed of 40.0 m/s is struck by a badminton racket…

A: Given mass of the shuttlecock m= 0.0055 kg Intial velocity u=40m/s Final velocity v= -65m/s (Taking…

Q: The table summarizes the known values for a completely Ball 1 Ball 2 elastic collision. Given the…

A:

Q: A 53,000-kg rail car is moving at 2.80 m/s as it approaches a conveyor belt. As it passes under the…

A: Given Data : The mass of the rail car is given as m1 = 53000Kg. The velocity of the rail car is…

Q: A soccer goalkeeper accelerates a ball from rest at a speed of 15 m / s for the time that his foot…

A: Force on an object equals to change in momentum of object w.r.t. time.

Q: A loaded tractor-trailer with a total mass of 5500 kg traveling at 2.5 km/h hits a loading dock and…

A: Conservation of momentum: It states that “the total momentum of a system remains conserved or…

Q: Two ice skaters suddenly push off against one another starting from a stationary position. The 45-kg…

A: We have to apply law of conservation of momentum concept here.

Q: An 80-g ball is thrown at a horizontal speed of 15 m/s to the right when it collides with a wall and…

A: Mass of ball "m"= 80g  Horizontal Velocity "vi"= 15m/s  after collision velocity "vf"= 12m/s time of…

Q: A 1000-kg car approaches an intersection traveling north at 20.0 m/s. A 1200-kg car approaches the…

A: Given Mass of one car = m1 = 1000 kg Velocity of one car = u1 = 20 m/s in North Mass of second car =…

Q: An open train car, with a mass of 2050 kg, coasts along a horizontal track at the speed 2.792.79…

A: If the net external forces acting on the system add up to zero, then the linear momentum of system…

Q: . A 5.0 kg bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11…

A:

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: