3. When starting a race, a 680 kg vehicle runs the first 1000 m in 3 minutes, starting from rest and accelerating uniformly a) What is the speed of the runner at the end of the 3 minutes? b) What is its kinetic energy? c) What average power does the engine generate during the 3-minute interval?

Q: 1. A 75 kg skier starts with an initial speed of 2 m/s down a 40 m high ramp. They launch off a ramp…

A:

Q: 18. A 4.0 kg block initially traveling at 5.0 m/s slides up an incline, reaching a vertical height…

A:

Q: 2. A 1.0 kg particle is moving at a speed of 4.0 m/s at t = 0 s. The kinetic energy of the particle…

A:

Q: 3. The energy needed to increase the speed of a certain car from 22 m/s to 54 m/s is 2900 kJ. a)…

A:

Q: What is potential energy? Provide a simple explanation. b) An apple on a tree is hanging 3m from…

A:

Q: 4. A 230-kg roller coaster reaches the top of the steepest hill with a speed of 6.40 km/h. It then…

A: To solve this problem we use the concept that total energy of the system remains constant

Q: A child on a sled (m = 47.0 kg) slides down a long hill starting from a rest position at a point…

A:

Q: Quick Start: A car accelerates from 0 to 43.2 m/s in 4.67 s. The mass of the car is 2.04e+03 kg. (a)…

A:

Q: 1. Work and Energy Type Question: A rollercoaster comprises a complex path of varying slopes using a…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: A 68.5-kg runner has a speed of 3.00 m/s at one instant during a long-distanče event. (a) What is…

A: (a) The kinetic energy of the runner is, KEi=12mv2=1268.5 kg3.00 m/s2=308.25 J=3.08×102 J

Q: 2. A certain 1500.0 kg fancy sports car can accelerate from rest to 30.0 m/s over a distance of 40.0…

A: Given, Mass of car (m) = 1500 kg  Initial speed of car(u) = 0 m/s   Final speed of car (v)= 30m/s…

Q: 34 Which of the following is ALWAYS true regarding the law of conservation of energy? a. Potential…

A:

Q: A frog jumps straight up at 0.7 m/s from 0.6 m above ground. How fast is it after it is about to…

A: Initial velocity = u = 0.7 m/s Initial height = h = 0.6 m Final height below the ground = h' = 0.8 m…

Q: You throw a glove straight upward to celebrate a victory. Its initial kinetic energy is K and it…

A: Given, The kinetic energy of the object, K The maximum height achieved by the object, h

Q: An athlete with a mass of 63.0 kg is in a cross country race, and at one instant he has a speed of…

A:

Q: Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy.…

A: Whether the total amount of energy at the top is equal to the total amount of energy at the bottom…

Q: A bicycle and rider going 12 m/s approach a hill. Their total mass is 57 kg. (a) What is their…

A: Given Data : speed of the rider, v = 12 m/s total Mass of the rider and the bicycle, m = 57 kg Since…

Q: A 1400 kg car starts from rest and accelerates uniformly to 19.5 m/s in 20s. a)Find the average…

A:

Q: A 75 kg skier starts with an initial speed of 2 m/s down a 40 m high ramp. They launch off a ramp…

A:

Q: 5. A 0.50-kg ball is thrown vertically upward with an initial speed of 16.0 m/s. What is the kinetic…

A: Given Mass of ball = m = 0.50 kg initial velocity= u = 16 m/s We have to calculate the kinetic…

Q: 4. A 73 kg skier starts at rest at the top of a 100 m high hill. He skies down this hill and back up…

A:

Q: A 72.0 kg swimmer jumps into the old swimming hole from a tree limb that is 3.75 m above the water.…

A:

Q: .At an amusement park, a swimmer uses a water slide to enter the main pool. If the swimmer starts at…

A:

Q: For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.00 m at…

A: Given, Weight of the barbell=400N height=2 m t=1.60 s

Q: -What is the kinetic energy of a 3000 lb automobile which is moving at 30 mi/h?

A:

Q: Consider a mass m=81.6 kg sliding on a frictionless surface as shown in the figure below. It begins…

A: Given data The mass of the body is given as m = 81.6 kg. The initial speed of the body is given as…

Q: Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy.…

A: Energy can neither be created nor be destroyed. It can only be transferred from one form to other.…

Q: 1. A 4.0 kg particle is moving at a velocity v = V2î – V2ĵ + 3k m/s. (a) (b) What is the particle's…

A: 1. Given m=4 Kg  Vi→=2 i^-2j^+3k^ m/sVf→=-2 i^+3k^

Q: a.) A student is riding a bicycle at a constant speed of 6.0 m/s on a level road. The mass of the…

A: (a) Given- Speed v=  6.0 m/s  Force F = 35 N The student's output power is…