what average braking force is necessary to stop a 2,500 kg car travelling with an initial velocity of 10m/s for 20 sec

Q: Superman must stop a 110-km/h train in 160 m to keep it from hitting a stalled car on the tracks.…

A:

Q: A student lifts a 1kg object vertically at a velocity of 1 m/s . What is the magnitude of the force…

A: Given Mass of an object is m = 1 kg Acceleration due to gravity is g=9.80 m/s^2

Q: When starting a foot race, a 68.6 kg sprinter exerts an average force of 704 N backward on the…

A: Given: The mass of sprinter (m) = 68.6 kg. Force exerted F = 704 N. Time (t) = 0.813 s.

Q: A batter strikes a baseball of mass 0.15 kg with a force of 18,000 N. What is the acceleration of…

A: Answer :-  Given data :-  F = 18000 N m = 0.15 kg

Q: A vehicle with a mass of 2.40 * 103 kg is driving at a speed of 25.0 m/s. When the driver uses the…

A: Mass of the vehicle m = 2.40 × 103 kg Initial velocity of the vehicle u = 25.0 m/s Final velocity of…

Q: D 6.34 m/s Fose N frins 2. A 1000 kg object is rising. Its speed is increasing at 3 m/s². The force…

A:

Q: What is the magnitude of the net force needed to bring a 2085 kg car to rest from 25.6 m/s in 9.3…

A: Solution: Given that mass m= 2085 kg vinitial = 25.6 m/s time t = 9.3 s to find the force required

Q: A skydiver (46 kg) is falling at 27 m/s when she pulls her parachute cord. The parachute slows her…

A:

Q: A 2550 kg car traveling to the north is slowed down from an initial velocity of 19.5 m/s by a 5750 N…

A: Using newtons second law  Fnet=ma  And using first equation of motion  V=u+at

Q: A 75-kg snowboarder has an initial velocity of 5 m/s and slides down a 92-m-long straight incline…

A:

Q: National Transportation Safety Board indicates that a person in a car crash has a reasonable chance…

A: Given: The mass of the car is 1700 kg. The maximum acceleration of the car is 300 m/s2. The initial…

Q: It has been determined that a force over 200 N can injure the hand. What is the shortest period of…

A: The objective of this question is to find the shortest period of time it will take to stop a 2 kg…

Q: A vehicle with a mass of 2.40 * 103 kg is driving at a speed of 25.0 m/s. When the driver uses the…

A:

Q: Papa Smurf (whose mass is 1kg) is sliding at 1.0 m/s over an icy pond that has no friction.  A force…

A: From Newton’s 2nd law, the expression of the force is given as, Here, m and a represent the mass…

Q: A runaway train with a mass of 500kg is stopped by batman. If it runway train starts with an initial…

A:

Q: what speed  ?  will he be going after  35.0 m ?

A: force=1.10×103 Npushing force=805 Ndistance, x=35 mmass=90 kg

Q: A 1 kg ball and a 2 kg ball, both the same dimensions, are dropped at the same time from a height of…

A: Acceleration due to gravity is independent from the mass of object so for Both object if we apply…

Q: V Three youths push a 40.0-kg block of ice so that it begins to coast on a frozen lake. With an…

A: mass of block of ice (m) = 40 kg Initial speed (u) = 3 ms

Q: A force F= (-2Nm)xi+(4Nm2)x2j-8Nk and a second force F=(-4Nm2)x2j-8Nk are applied to a 4 kg object…

A: A force F= (-2Nm)xi+(4Nm2)x2j-8Nk and a second force F=(-4Nm2)x2j-8Nk are applied to a 4 kg object…

Q: How much force is required to bring a car of mass 1451 kg, initially traveling at 16.7 m/s, to rest…

A: Given  Mass of car  m = 1451 kg  Initial speed of car u = 16.7 m/s  Final speed of car  v = 0 m/s…

Q: A student pushes a physics textbook of mass 1.19 kg across a table with a horizontal force of 5.66…

A: The objective of this question is to find the speed of the textbook after a certain period of time.…

Q: A 3500lb car decelerates from 60mph to 45mph in 8 seconds. Neglecting friction, what is the average…

A:

Q: A 72 fireman slide down a 3.2 m pole by applying a frictional force of 377 N against the pole with…

A: Given , mass of fireman , m = 72 kg Height of pole , h = 3.2m Frictional force , f = 377 N…

Q: A 1640-kg car is traveling with a speed of 17.6 m/s. What is the magnitude of the horizontal net…

A: Given data:  Mass (m) = 1640 kgInitial velocity (v0) = 17.6 m/sFinal velocity (v) = 0 m/sDistance…

Q: A baseball is hit with 200 lbs (889.7 Newtons) of force and given a horizontal velocity of 19 m/s.…

A: Let, the mass of the ball is 1 Kg. In the vertical direction, only force due to gravity is acting on…

Q: An automobile of weight 4500 lb moving at 65 mi/h is braked suddenly with a constant braking force…

A:

Q: A child with mass of 16.5 kg stands on the edge of a park bench and leaps into the air. Her initial…

A: The horizontal component of velocity is always constant as there is no acceleration in the…

Q: A bowling ball weighing 60.0 N initially moves at a speed of 4.20 m/s. How long must a force of 47.5…

A:

Q: A truck with velocity 33 m/s turned a corner too sharp and lost part of the load. A falling box will…

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Q: A clever coyote uses rocket powered skates to try to catch a roadrunner. The mass of the coyote is…

A: The mass of the coyote: m=38.1 kg Since the coyote starts at rest, it initial velocity is zero, u=0…

Q: A 60 kg object traveling at a speed of 80 m/s is suddenly brought to rest in a time of 0.4 seconds.…

A:

Q: 9. A boy slides down a hill on a sled (total mass of 35 kg) and coasts onto a flat plain with a…

A: Given m= 35 Kg Magnitude of the fractional force = - 30 N Here negative sign shows that the force is…

Q: A 5 kg block is given an initial velocity of 10 m/s. If there is a friction force of 13 N opposing…

A:

Q: A hockey puck with mass 0.166 kg is pushed across the ice with a constant force of 0.89 N. The…

A:

Q: A lump of clay of mass 0.21 kg is dropped from a height of 5.5 m. The clay comes to a full stop…

A: mass of clay is m = 0.21 Kg height from which clay was dropped is h = 5.5 m time taken by the clay…

Q: A commercial jet is coming in for landing.

A: V2 -U2 = 2as here V= final velocity U = initial velocity a = acceleration s= 1.6km = 1600 m U= 76…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!