During an investigation of kinetic energy, a student was measuring the speed of an object using photogates. They launched a 155 g puck, a total distance of 75.0 cm, on a friction-less air table. The average time needed to move this distance was 5 seconds. If the puck was moving at a constant velocity, what would the kinetic energy of the puck be as it moved between the photogates?

Q: A 80 kg student traveling in a car with a constant velocity  has  a kinetic  energy of 1.1* 10^4j.…

A:

Q: A young boy is riding a bicycle that has a total mass (including the kid) of 27.6 kg. The boy is…

A:

Q: A basketball of mass 0.599 kg is dropped from rest from a height of 1.25 m. It rebounds to a height…

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Q: A 56 kg student traveling in a car with a constant velocity has a kinetic energy of 1.3 104 J. What…

A: Given that,Mass of student : m = 56 (kg)Kinetic energy : K.E. = 1.3×104 (J)Here we need to find the…

Q: A 7.0 kg bowling ball moves at 2.25 m/s. How fast must a 3.00 g Ping-Pong ball move so that the two…

A: Given information:Mass of the bowling ball (mb) = 7.0 kgMass of the ping pong ball (mp) = 3.00 g =…

Q: Helen asked her mom to take her to the play ground near her house. She loves to scare her mom by…

A: Mass of Helen m=20.4 kg Helen is initially at a height h=3.30 m Since she starts from rest her…

Q: The superheroine Xanaxa, who has a mass of 66.7 kg, is pursuing the 79.7 kgkg archvillain Lexlax.…

A: Initially, the potential energy of superheroine will be, Since the Superheroine leaps from the…

Q: A student at another university repeats the experiment you did in lab. Her target ball is 0.860 m…

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Q: Mathematically, explain how a car (A) with mass of 500 kg and velocity of 2 m/s has the same kinetic…

A: Given that:- mA=500 kgmB=20000 g=20 kgvA=2 m/svB=10 m/s

Q: 102 kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope 1.4…

A: Given:- The mass of the person m = 102 kg  The speed of the skis at the ground level vg = 9.5 m/s…

Q: Olivia fires an arrow at a bird sitting 20m up in a tree. The arrow has a mass of 0.010 kg and…

A: Given height of the bird from the ground = 20m  mass of an arrow = m = 0.010 kg  initial bow speed =…

Q: Two sledders go down a steep hill for which friction is negligible on identical sleds. Sledder A has…

A: Mass of sledder A = 50 kg Mass of sledder B = 75 kg

Q: A 67 kg student traveling in a car with a constant velocity has a kinetic energy of 1.8 104 J. What…

A: Given that,Mass of student : m = 67 (kg)Kinetic energy : KE = 1.8×104 (J)Here we need to find the…

Q: A toad with mass of 188 g leaps into the air to catch a fly. If the toad's jump was at an angle of…

A: Given: Toad's mass, m=188 g=0.188 kg Toad's jumping angle w.r.t horizontal, θ=35° Initial velocity,…

Q: A girl and her bicycle have a total mass of 60 kg. At the top of the hill her speed is 5.0 m/s. The…

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Q: A bus of mass 1000 kg with an initial velocity of 40 m/s starts up a hill and coasts upward with no…

A: Given : Initial Velocity (  u ) = 40 m/s Mass ( m ) = 1000 kg The height achieved when it stops ( h…

Q: A 55 kg student traveling in a car with a constant velocity has a kinetic energy of 1.6  104 J. What…

A: Write the mass of the student. m=55 kg   Write the kinetic energy. KE=1.6×104 J

Q: A soccer ball hits the goalie's hands with a horizontal velocity of 38 m/s. The mass of the soccer…

A:

Q: A young girl (m = 30 kg) rides a skateboard (m = 3.2 kg) at a speed of 4.2 m/s. (a) How much work…

A: Given Mass of young girl = m = 30 kg Mass of skateboard = 3.2 kg speed of young girl on skateboard =…

Q: In a circus act, a 60 kg clown is shot from a cannon with an initial velocity of 16 m/s at some…

A: Given,

Q: A 1.000 ´ 103 kg car is moving at 90.0 km/h (25.0 m/s) as it exits a freeway. The driver brakes to…

A: mass = 1000 kg initial speed = 25 m/s final speed = 10 m/s   Yes, the work was done by the car…

Q: A block of 2 kg slides down a ramp with a height of 1.5 m, then hits and sticks to another block of…

A: Given: The mass of the first block is 2 kg. The mass of the second block is 4 kg. The height of the…

Q: A 71 kg student traveling in a car with a constant velocity has a kinetic energy of 1.8 x 10^4 J.…

A: We know thatK.E=12mV2V=2(K.E)mHereV=velocity of objectK.E=kinetic energy of objectm=mass of object

Q: mr.berkley is driving his car down lake park at 21 m/s. He sees something in the road and slows down…

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Q: A rider of mass 40 kg sits on a sled of mass 10 kg at the top of the hill that is 15 m above level…

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Q: A 1-kilogram rock is thrown directly downward from the top of a 70-meter-tall building with an…

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Q: For its size, the commonflea is one of the most accomplished jumpers in the animal world.A…

A: Given: The height which can be achieved by person is h=60 cm. The mass of person is m=65 kg. The…

Q: A 300 g hockey puck is shot across an ice-covered pond. Before the hockey puck was hit, the puck was…

A: We have to determine the change in energy of punk over time.

Q: 5. A0.20-kg rocket in a fireworks display is launched from rest and follows an erratic flight path…

A: Mass, m = 0.2 kgInitial velocity, vi = 0 m/sInitial height, hi = 0 mFinal height, hf = 29 mWork, W =…

Q: What is the kinetic energy of a 900 kg car whose velocity is 16.67 m/s? O 15.0 kJ 125 kJ 12.5 kJ O…

A: Given Mass of car = m = 900 kg Velocity = v = 16.67 m/s We have to calculate the kinetic energy of…

Q: A 1000-kg car is traveling at 20 m/s along a horizontal road when the brakes are applied. The car…

A: Given that,Initial speed : u = 20 (m/sec)Fina speed : v = 0 (m/sec)Mass of the car : m = 1000…

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.