Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s but collides head-on with a padded goalpost and experiences a backward force of 1.76×104 N for 5.50×10-2 s .

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Q: ) Two figure skaters, one weighing 625 N and the other 725 N, push off against each other on…

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Q: A ball of mass 1.5 kg is thrown upward. It leaves the thrower's hand with a velocity of 10 m/s. What…

A: Given data: Mass of the ball (m) = 1.5 kg Initial velocity (vf) = 10 m/s Final velocity of the ball…

Q: The driver of a car (1100 kg) traveling at 30 m/s on dry concrete sees a deer in the distance and…

A: The mass of the car m=1100 kg. The velocity of the car v=30 m/s. Standard values: Coefficient of…

Q: A boy slides down a hill on a sled (total mass of 40 kg) and coasts onto a flat plain with a speed…

A: GivenTotal mass (m) = 40 KgInitial velocity (U) = 5.8 m/sFinal velocity (V) = 0Force of friction (F)…

Q: A bullet of mass 25.0 kg strikes a block of wood at a speed of 395m/s. The bullet embeds itself in…

A: Given: Mass of the bullet, m = 25.0 kg Initial speed of the bullet, v = 395 m/s The bullet embeds…

Q: When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid…

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Q: A car with mass 996 kg moving at 28 m/s hits a giant bag of marshmallows.  The bag slows the car…

A: Before hitting,  v1 = 28 m/s , m = 996 kg  After hitting ,                 V2 = ? , m = 996 kg…

Q: A 0.576-kg ball, initially moving with a speed of 2.93 m/s, bounces off a wall and then moves with a…

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Q: In the figure, two long barges are moving in the same direction in still water, one with a speed of…

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Q: Calculate the final speed (in m/s) of a 100 kg rugby player who is initially running at 7.75 m/s but…

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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: Emma and Katie are racing along in their new wagon. Upon reaching the bottom of the hill traveling…

A: Given Katie speed at the bottom of the hill = u = 13.2 m/s Distance between Katie and her teddy bear…

Q: A 0.544-kg ball, initially moving with a speed of 2.54 m/s, bounces off a wall and then moves with a…

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Q: Dizzy is speeding along at 35m / s as she approaches the level section of track near the loading…

A: Dizzy is speeding along at u=35 m/s. A braking system abruptly brings the M=335-kg car (rider mass…

Q: A rubber ball hits the floor with a speed of 17.5 m/s and bounces vertically back with a speed of…

A: Refer explanationExplanation:Put value in above equation F=3.924/0.12= 32.7N Final answer is 32.7N

Q: A 6.065 kg tennis ball moving to the right with a speed 6f 15m/s is struck by a tennis ractet,…

A: The concept used in this question will be that average force(Favg) can be calculated by the rate of…

Q: An astronaut of 100 kg at 100 meters from his spaceship finds himself hopelessly drifting away at a…

A: If no external force is applied on a system, the momentum of the system remain conserved. Here on…

Q: Calculate the final speed (in m/s) of a 104 kg rugby player who is initially running at 7.75 m/s but…

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Q: I am driving down the street at 11.2 mi/h and suddenly I see a squirrel. I slam on the brakes in…

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Q: On the set of a new Hollywood movie, a 74.5-kg stunt actor (Max Payne) is tossed straight out of a…

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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: A ball of mass 160 g is dropped from a height 1.5 m and bounces off the floor with a velocity 3.0…

A: Mass of ball is Initial height is Velocity of ball after bouncing from the floor is in upward…

Q: A 45 g golf ball leaves the tee with a speed of 43 m/s after a golf club strikes it.  Determine the…

A: Given that, The mass of the ball is m=45 g The ball leaves the tee with a speed of 43 m/s

Q: I am driving down the street at 23.4 mi/h and suddenly I see a squirrel. I slam on the brakes in…

A: Given that: Speed of car, u = 23.4 mi/h = 23.4 X 1.60 = 37.44 km/h= 10.4 m/s Time of decleration, t…

Q: A golf ball of m=0.05 kg reaches a speed of 95 m/s, 0.01 seconds after it was released. What force…

A: Given data:  Mass (m) = 0.05 kg Initial velocity (v0) = 0 m/s Final velocity (v) = 95 m/s Time (t) =…

Q: A sled filled with sand slides without friction down a 45 ∘ slope. Sand leaks out a hole in the sled…

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Q: 107.5-kg rugby player is initially running at 8.5 m/s in the positive direction, but collides…

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Q: When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid…

A: Given:-  Mass of man (m) = 84.8kg Before hitting the ground man has speed = 7.88m/s  Time taken (t).…

Q: 10,000 kg railroad car is moving at 2.00 m/sec when a 4000 kg load of gravel is suddenly dropped in.…

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Q: A 2500 kg truck traveling at 80 km/h collides with another car of mass 1000 kg traveling at 50 km/h…

A: Since the collision between the vehicles is inelastic on the momentum is conserved that is :…

Q: A block of mass m1 = 15.5 kg slides along a horizontal surface (with friction, μk = 0.29) a distance…

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Q: as shown in fig (1) ,m2 = 2 kg, h2 = 3 m ,ml = 4 kg, , h1 = 0.95 m, and µk = 0.25. esumate (a) the…

A: Given: m2=2 kg, m1=4 kgh2=3 m, h1=0.95 m Coefficient of kinetic friction is μk=0.25

Q: A 0.507-kg ball, initially moving with a speed of 3.49 m/s, bounces off a wall and then moves with a…

A: Initial speed of ball, Vo= 3.49 m/s Final speed of ball, V = half of Vo Time of contact of ball with…

Q: Dizzy is speeding along at 31.1 m/s as she approaches the level section of track near the loading…

A: Initially speed of Dizzy's car =31.1m/s Final speed of Dizzy's car =3.5m/s Distance cover during…

Q: An arrow is accelerated out of a bow. What is the average force exerted on a 0.15 kg arrow if it is…

A: The objective of the question is to find the average force exerted on the arrow. We can use Newton's…

Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.