2. What is the net-Work (Wne) of a 1000-kg car travelling at 30 m/s and reducing its speed to 10 m/s?
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- What is the kinetic energy of a 3000 lb. automobile which is moving at 33 fps?Determine the power required for an 1150-kg car to climb a 100-m-long uphill road with a slopeof 35° (from horizontal) in 10 s (a) at a constant velocity, (b) from rest to a final velocity of 30m/s, and (c) from 35 m/s to a final velocity of 5 m/s. Disregard friction, air drag, and rollingresistance. ( I was looking on a chegg video and was wondering: "does PE + KE= Work?" I thought it was just (the change in KE= Work) threw me off hard. I only need problem (b.) and if you choose to answer only of the these two questions may you please answer this one?Start with 1 lbf ft ⁄s and convert it to N⋅m/s and show that 1 lbf ⋅ ft ⁄s is equal to 1.36 W. Knowing that 550 lbf ⋅ ft ⁄s is equal to 1 hp (horsepower), how many kW is that?
- Calculate the total potential energy, in kJ, of an object with a mass of 208.72 lbm when it is 9.76 ft above a datum level at a location where standard gravitational acceleration exists.Calculate the energy used per day (kWh) of a car with an efficiency of 8 kilometers per liter and has driven 85 kilometers in the past 7 daysWhat is the mass of an object that falls freely under the influence of gravity from an elevation of 100 m above the earth's surface? The downward velocity is 100 m/s and strikes the earth at 109.4m/s. Take g = 9.81 m/s2. Ans. m=40kg
- 2) A crane lifts a container of 32 [Ton] mass, on a platform located at a height of h, and this takes a time of t = 9.3 [s], if the engine of the crane develops a power of 125663 [Watts]. How high is this platform? For the purpose of solving this problem, use gravity as 10 m / s ^ 2.A car with a mass of 1308 kg slows down from 58 km/h to 24km/hr. Calculate the change in its kinetic energy in kJ (NOT J)4. A weightlifter raises a 150-kg barbell from the floor to a height of 2.2 m in 0.80 s. What is his average power output during the lift?
- Does the work required to lift a book to a high shelf depend on how fast (in seconds) you raise it.why?The work net available on the surrounding is 12 kJ. Determine the average power produced by a vehicle having a mass of 1000 kg with constant acceleration of 4.6 m/s². Note that the average velocity from this is 11.5 m/s.1. A student of mass 50 kg carries a bag weighing 4000g from the ground floor to his class on the first floor that is 900 cm high . The work done by the boy is =