John was driving a car at a speed of 20.5 m/s and stopped car in 2.5 s using brakes. If the mass of car with him is 1.5x106 g, what is the average horizontal force exerted on it during braking? Assume the road is leveled.

Q: A bullet of mass m is headed at horizontal speed v0 toward a block of mass 13 m resting on a…

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Q: How long does it take a 2500 kg car to slow down from 15 m/s if it strikes a wall with a force of…

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Q: a 1040 kg car and 3360 kg truck collide perfectly inelastically. before the collision, the car…

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Q: A 1.5 kg ball is coming straight at a 80 kg soccer player at 15 m/s who kicks it in the exact…

A:

Q: A tennis ball of mass 0.0621 kg is served. It strikes the ground with a velocity of 54.0 m/s (120…

A: Mass, m = 0.0621 kg  Velocity, v = 54 m/s Δt=0.0630 s  Δvx=53cos18ᵒ-54cos(-22ᵒ)…

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: A soccer ball of mass 0.4 kg, initially at rest, acquires a speed of 5 m/s immediately after being…

A:

Q: In a crash test, a car with a mass of 1200 kg hits the wall as shown. the car's initial and final…

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Q: As part of a safety investigation, two 1400 kg cars traveling at 20 m/s are crashed into different…

A: Given mass of car m=1400 kgspeed of car u=20 msCars are crashed into different barriers .

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: An object of mass 4 kg, moving with an initial velocity of (5î )m/s, collides (pa) with and sticks…

A: Let object A mass Ma = 4 kg  object B has a mass Mb = 2 kg  Initial velocity of A is (Va)i = ( 5 î )…

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

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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: 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: 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: mbol/notation of the unit. 9 kg block of wood resting on a platform was hit by a 0.008 kg of bullet…

A:

Q: A dog weighing 36 kg, is standing on a flatboat so that he is 23 m from shore. He walks 16 m on the…

A: It is given that,

Q: Two figure skaters are coasting in the same direction, with the leading skater moving at 5.5 m/s and…

A:

Q: After falling from rest from a height of 30-m, a 0.50-kg ball rebounds upward, reaching a maximum…

A:

Q: The accident involved car A of mass 1900 kg which crashed into stationary car B of mass 1100 kg. The…

A: Given: The mass of car A is mA=1900 kg. The mass of car B is mB=1100 kg. The coefficient of kinetic…

Q: During a storm, rain comes straight down at a rate of 46.8 kph and perpendicularly hits the roof of…

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Q: A 6.693E+3-kg truck moving east at 10.3 m/s collides with a 1.742E+3-kg car moving west at 31.0 m/s.…

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Q: Determine the velocity for each car after the collisions.

A: As per the work-energy theorem, Here, K, Wf, m, v, f, d, and θ represent the car’s kinetic energy,…

Q: A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun…

A: Consider the initial speed of the bullet be vi, the final speed of the bullet be vf, the mass of the…

Q: Helicopter drops a 0.30 kg copper ball onto a steel plate. The ball's velocity just before impact…

A: Mass of copper ball, m = 0.30 kg Velocity just before impact and after are 4.5 m/s and 4.2 m/s,…

Q: A machine gun, of mass 35.0 kg, fires 50.0-gram bullets, with a muzzle velocity of 750 m/s, at the…

A: Given: The mass of the bullet is 50.0 g. The number of bullets per minute is 300. The muzzle…

Q: a pebble of mass 1g exerts a force with magnitude F=1N on Godzilla, whose mass is 10000 kg. the…

A: Given data The mass of pebble is, mb= 1 g The mass of the Godzilla is, mG= 10000 kg The force exerts…

Q: A rubber ball is dropped and bounces vertically from a horizontal concrete floor. If the ball has a…

A: Given data: When the rubber ball is falling down its initial velocity is u = - 3.4 m/sWhen it is…

Q: A small lab cart and one of larger mass collide and rebound off each other. Which of them has the…

A: Given: A small lab cart and one of larger mass collide and rebound off each other.

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: In a collision, a 1200 kg car initially moving at 30 m/s comes to a stop in 0.5 second. The…

A:

Q: In the figure, determine the character of the collision. The masses of the blocks, and the…

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Q: During a collision with a wall, the velocity of a 0.200-kg ball changes from 20.0 m/s toward the…

A:

Q: After falling from rest from a height of 30 m, a 0.50 kg ball rebounds upward reaching a height of…

A: Given The height from which ball is fall is h1=30 m. The mass of ball is m=0.50 kg. The height from…

Q: A high-speed photograph of a club hitting a golf ball. The club was in contact with a ball,…

A:

Q: A stone of mass m = 1.45 kg is dropped from a height of h = 3.6 m into a basin of water. At a time…

A: The velocity of an object free falling from a certain height is given by v = 2gh, where g =…

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 0.140-kg baseball is dropped from rest. It has a speed of 1.20 m/s just before it hits the ground,…

A:

Q: A diver with a mass of 80 kg jumps from a dock into a 130 kg boat at rest on the west side of the…

A: Applying the conservation of angular momentum,

Q: Two figure skaters are coasting in the same direction, with the leading skater moving at 6.5 m/s and…

A:

Q: A varsity player of a volleyball team hit a 400 gram ball with a horizontal velocity of 5 m/s over…

A: Given value--- mass= 400 g. initial velocity = 5 m/s . final velocity = 6 m/s . time period = 0.002…

Q: A small guy and a large football player moving at the same speed collide head-on. Which person…

A: Given in question - Small guy and large football player move at same speed collide. To find - Which…

Q: An amusement park features a set of light railcars, currently resting on a straight, level section…

A: mass of railcar = 18 kg mass of ellen = 42 kg mass of tim = 32 kg speed of tim's rail car = 3 m/s

Q: After falling from rest from a height of 31 m, a 0.60-kg ball rebounds upward, reaching a height of…

A: Assume that the velocity in downward direction is negative and in upward direction is positive.…

Q: A freight train is being assembled in a switching yard, with two boxcars. Car 1 has a mass of m1=…

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: