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) Find the kinetic energy of a bullet of mass 5.00 g traveling at a speed of 295 m/s. (b)…

A: A)Mass of bullet (m) = 5 g velocity of bullet (v) = 295 m/s

Q: A body of mass 3.65 kg is moving toward x direction with the velocity V = (a-bt) (c-dt), where t is…

A: As per the given condition, at t2= 1.59 s velocity of body is is V=…

Q: A 15 × 10² g ball is thrown straight up in the air with an initial upward velocity of 25 m s-'.…

A: Given  Mass of ball m=1500g=1.5kg Initial speeed v=25m/s

Q: a .40 kg block initially at rest on a frictionless horizontal surface is acted upon by force of 5.0…

A:

Q: A projectile of mass m is fired horizontally with an initial speed of vo from a height ofh above a…

A:

Q: How much work is needed to change the speed of a 2375 kg sport utility vehicle from 15.0 m/s to 60…

A: Given data:  Mass (m) = 2375 kg Initial velocity (Vi ) = 15.0 m/s Final velocity (Vf) = 60 m/s…

Q: An engine uses 20000 N of force to power a car at an average speed of 5.0 m/s. What is the average…

A: P=Wt=Fdt=Fv

Q: In a bowling alley, the distance from the foul line to the head pin is 59 ft, 10 13/16 in. (18.26…

A: The speed is, v=dtv=18.26 m2.0 sv=9.13 m/s

Q: 4. A 10 kg block slides down a hill that is 200 meters tall with an initial speed of 12 m/s. What is…

A:

Q: A projectile of mass m is fired horizontally with an initial speed of Vo from a height of h above a…

A: Hai, since there are multiple sub parts posted, we will answer the first three sub parts. (a) The…

Q: 3. 0.20-kg rocket in a fireworks display is launched from rest and follows an erratic flight path to…

A:

Q: A box of mass 3.0 kg slides on a horizontal frictionless table and collides with a 2.0 kg box…

A:

Q: a toy car (0.50kg) runs on a frictionless trackand has an initial kinetic energy of KE =1.6. over…

A:

Q: The figure above shows a water-slide ride in which a glider is shot by a spring along a…

A:

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: The figure shows the top view of an object of mass m moving on a uniformly rough horizontal surface.…

A: Given data: Mass of the object, m=7.15 kg Coefficient of friction, μ=0.644  Radius of the…

Q: A 70-kg toboggan is coasting on level snow.  As it passes beneath a bridge, a 30-kg parcel is…

A:

Q: Gayle runs at a speed of 4.35 m/s and dives on a sled, initially at rest on the top of a…

A: Given Data Mass of Gayle=mG=50 kgMass of Gayle's brother=mGB=30 kgMass of Sled=mS=5 kgInitial…

Q: Petra asked her mom to take her to the playground near her house. She loves to scare her mom by…

A: Given:  Petra's mass, m=20.4 kg Height of slide, h=3.30 m g=9.8 m/s2 Let's calculate Petra's speed v…

Q: A sled of mass 1.59 kg has an initial speed of 4.84 m/s across a horizontal surface. The coefficient…

A: Please note : As per answering guidelines I can answer the first question only.Since, this is not a…

Q: A 5.40-kg box rests on a horizontal surface. The coefficient of kinetic friction between the box and…

A:

Q: The net work exerted on a box filled with fresh berry during its motion from a point O to a point A…

A: Net work exerted or work done, w= 100 J Combined mass of box  and fruits, m=10 kg Initial speed of…

Q: A small block of mass 246 g starts at rest at A, slides to B where its speed is vg = 5.4 m/s, then…

A:

Q: Harriet is practicing archery. As she draws back an arrow, the arrow has 34.3 J of elastic potnetial…

A: Write a given values of this question. Elastic potential energy. PEelastic=34.3J Gravitational…

Q: A 0.40kg block initially at rest on frictionless horizontal surface is acted upon by a force of 3.0…

A: mass of the body m=0.40 kg Force applied F=3 N Displacement of the body d=5.0 m Initial velocity…

Q: An average froghopper insect has a mass of 11.3 mg and jumps to a maximum height of 308 mm when its…

A:

Q: How much kinetic energy does a student of mass 60. kilograms running at 3.0 meters per second…

A:

Q: Two blocks are free to slide along the frictionless wooden track as shown in the figure. The block…

A: m1 = 5 kg h = 5 m m2 = 10 kg

Q: On a frozen pond, a 8.54-kg sled is given a kick that imparts to it an initial speed of…

A:

Q: A projectile of mass m is fired horizontally with an initial speed of v, from a height of h above a…

A: a) Work done when the applied force and distance are parallel is given as,…

Q: In being served, a tennis ball is accelerated from rest to a speed of 43.9 m/s. The average power…

A: The force acting on the ball is 133.03 N

Q: On a frozen pond, a 8.54-kg sled is given a kick that imparts to it an initial speed of…

A:

Q: What is the velocity of a 500 kg elevator that has 4,000 J of energy as it goes from the 13th floor…

A: Given, the mass of elevator =500 kgElevator has energy =4000 Jwe have to calculate the velocity of…

Q: A baseball is thrown and lands 120 m away. While the ball is in flight, assuming the effect of air…

A: It is given that the friction is negligible. Then, according to the principle of conservation of…

Q: A 2 kg block slides on a frictionless surface at 10 m/s. How much kinetic energy does it have?…

A:

Q: 1. Ben is walking with his backpack. If Ben is 65 kg, walking at a rate of 2 m/s and his backpack is…

A: kinetic energy =12mv2   here  Ben is 65 kg  backpack is 0.5 kg both have velocity 2 m/s

Q: What is the kinetic energy of a 900 kg car whose velocity is 60 km/hr? Group of answer choices 125…

A:

Q: A 0.697 kg football is thrown upward with an initial speed of 49.7 m/s.  Neglecting wind resistance,…

A: Given: m=0.697 kg vo=49.7 m/s g=9.8 N

Q: (A) (B) 5.00 m 3.20 m 2.00 m

A:

Q: During a serve, a tennis racket exerts an average force of 250 N on a 80-g tennis ball, initially at…

A: Given data:  Force (F) = 250 N Mass (m) = 0.080 g Initial velocity (Vi) = 0 m/s Time (t) = 0.005 s…

Q: A 5.75-kg object passes through the origin attime t = 0 such that its x component of velocity is…

A: Given that x component of velocity and y component of velocity. Then We have to determine the…

Q: If a system consist of 5 particles, how many terms appear in the expression for total potential…

A: According to Newton's law of gravitation, gravitational force acts between any two masses. Each of…

Q: In Fig. a 3.2 kg box of running shoes slides on a horizontal frictionless table and collides with a…

A: Free body diagram of the system is as given bellow: Use the following equations: Linear momentum is…

Q: Two cars are moving. The first car has twice the mass of the second car, but only half as much…

A: Given, Mass of car A (mA)= 2m Mass of car B(mB)= m Kinetic energy of car A (KA)= K Kinetic energy of…

Q: A two-man bobsled has a mass of 350 kg. Starting from rest on a level road, the two racers push the…

A: Initial velocity (u) = 0 m/s Total mass (m) = 350 kg Applied force (F) = 290 N distance moved (d) =…

Q: · A 85 gram arrow is fired from a bow whose string exerts an average force of 105 N on the arrow…

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Q: The system in the figure is released from rest. The coefficient of kinetic friction between block A…

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Q: An object of mass 2.0 kg is dropped from a height of 1.0 metres. It lands with a speed of 1.8 m/s.…

A: Mass of object = 2kg Velocity at ground v= 1.8m/s  Height h= 1m

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.