At what speed does a 2000 kg compact car have the same kinetic energy as a...
At what speed does a 1300 kg compact car have the same kinetic energy as a 1.8×104 kg truck going 24 km/hr ?
At what speed does a 1500 kg compact car have the same kinetic energy as a 1.60×104 kg truck going 24.0 km/hr ?
At what speed does 1600 kg compact car have the same kinetic energy as a 1.80 Times 10^7 kg truck going 24.0 km/hr? A 61kg student is standing at Op a spring in an elevator that is accelerating u? Ward at 3.1 m/s^2. The spring constant is 2600 N/m By how much is the spring compressed? A 13 kg ru? Way grocery cart into a spring with spring constant 250 N/m and compresses it by 61 cm. What was the...
Part A 104-kg truck going 20 km/h? At what speed must a 950-kg subcompact car be moving to have the same kinetic energy as a 3.2 × Express your answer using two significant figures. 困? u= km/h
011 10.0 points What is the speed of a 0.146 kg baseball if its kinetic energy is 110J? Answer in units of m/s. 012 10.0 points Consider a compact car that is being driven at 88 km/h. The acceleration of gravity is 9.8 m/s From what height would the car have to be dropped to have the same kinetic energy? Answer in units of m.
Assume that the kinetic energy of a 1000 kg car moving at 125 km/h could be converted entirely into heat.What amount of water could be heated from 16 ∘C to 52 ∘C by the car's energy? Express your answer using two significant figures.
Suppose a spacecraft of mass 20000 kg is accelerated to 0.120c. How much kinetic energy would it have? Express your answer to three significant figures and include the appropriate units. KEre = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B If you used the classical formula for kinetic energy, by what percentage would you be in error? Express your answer using two significant figures. IV. ADD A O O ? KE KErel...
Calculate the kinetic energy (in ft-lbf) of a 2727'lbm car that is traveling at a speed of 59 miles/hr. (The answer should have o significant figures
A 1200 kg car traveling at 60 mph quickly brakes to a halt. The kinetic energy of the car is converted to thermal energy of the disk brakes. The brake disks (one per wheel) are iron disks with a mass of 4.0 kg. Estimate the temperature rise in each disk as the car stops. Express your answer using two significant figures.
A car moving at 90 km/h passes a 1.21 km -long train traveling in the same direction on a track that is parallel to the road. Part A If the speed of the train is 71 km/h , how long does it take the car to pass the train? Express your answer using two significant figures. Part B How far will the car have traveled in this time? Express your answer using two significant figures. Part C If the car...