A 1.50 ✕ 103-kg car starts from rest and accelerates uniformly to 19.6 m/s in 11.0 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by the engine. hp (b) Find the instantaneous power output of the engine at t = 11.0 s, just before the car stops accelerating. hp

Q: A 1.50 x 103-kg car starts from rest and accelerates uniformly to 19.2 m/s in 11.7 s. Assume that…

A: Kinematics.

Q: The electric motor of a model train accelerates the train from rest to 0.720 m/s in 25.0 ms. The…

A:

Q: A boat weighing m = 2.5 t develops a maximum speed of vmax = 30 m / s. After turning off the engines…

A:

Q: A tennis ball with a mass of 0.05 kg is thrown directly upwards. If it initially has 4.7 J of…

A: Initial kinetic energy = 4.7 Joules acceleration due to gravity = 10 m/s2 mass of tennis ball = 0.05…

Q: A certain rain cloud at an altitude of 1.40 km contains 3.20 107 kg of water vapor. How long would…

A: Altitude of the rain cloud,  Mass of the water vapor,  Power of the pump,  Acceleration due to…

Q: A 618-kg elevator starts from rest and moves upward for 3.10 s with constant acceleration until it…

A: Given Data: The mass of an elevator is, m=618 kg The time required to move upward is, t=3.10 s The…

Q: When we are interested in biological energy resources and metabolism, we need to know, among other…

A: The potential of a mass M at height h from the earth ground is U = Mghwhere, M is the mass…

Q: A 1.50 x 103-kg car starts from rest and accelerates uniformly to 16.2 m/s in 12.3 s. Assume that…

A: Given,  Mass of the car = 1.50 ×103 kg Final velocity (vf)  = 16.2 m/s Initial velocity (vi) = 0 m/s…

Q: A sled is given a push across a horizontal surface. The sled has a mass m, the push gives it an…

A: Given Data: Mass of the sled = m.Initial speed of the sled (v) = 3.40 m/s.Coefficient of kinetic…

Q: When its engine of power 76 kWkW is generating full power, a small single-engine airplane with mass…

A: Given:               Engine Power , P = 76 kW = 76×103W                                mass  M= 710…

Q: A motorist driving a 147-kg car on level ground accelerates from 20.0 m/s in a time of 5.00 s.…

A: The kinetic energy of the car is, KE=12mv2KE=12147 kg20.0 m/s2KE=29400 J

Q: A 628-kg elevator starts from rest and moves upward for 4.10 s with constant accelerațion until it…

A:

Q: A person in good physical condition can put out 100 W of useful power for several hours at a…

A: We know that one people produces an output of 100 W so the number of people that can produce 5 kW of…

Q: As a pickup truck travels along a level stretch of road with constant speed, most of the power…

A: In this question we use power equation with speed and force.

Q: A 684-kg elevator starts from rest and moves upward for 4.20 s with constant acceleration until it…

A: Given: The mass of the elevator is m=684 kg, The cruising speed is vf=1.79 m/s. The time is t=4.20…

Q: A 694-kg elevator starts from rest and moves upward for 2.80 s with constant acceleration until it…

A: Data Given , Mass of the elevator ( m ) = 694 kg Elevator starts from rest , means  Initial velocity…

Q: 1.50 × 10³-kg car starts from rest and accelerates uniformly to 16.9 m/s in 11.9 s. Assume that air…

A: Given Mass of car = m = 1.50 × 103 kg IInitial velocity = u = 0 Final velocity = v = 16.9 m/s Time…

Q: A sked is initially given a shove up a frictionless 23.0o incline. It reaches a maximum vertical…

A: Let v be the final velocity of the sked, u be the initial velocity of the sked, s be the length of…

Q: A container is thrown vertically downwards, at the moment it is thrown it has a kinetic energy of…

A: According to conservation of total mechanical energy, the sum of kinetic energy and potential energy…

Q: A 1.50 ✕ 103-kg car starts from rest and accelerates uniformly to 17.9 m/s in 12.8 s. Assume that…

A:

Q: A 60.0 kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m—high rise.  Find her final…

A: skier weight=60.0 kg speed of skier= 12.0 m/s height= 2.50 m coefficient of friction= 0.0800 angle…

Q: A 1.50 x 10³-kg car starts from rest and accelerates uniformly to 16.6 m/s in 12.3 s. Assume that…

A:

Q: A certain rain cloud at an altitude of 1.46 km contains 3.20 ✕ 107 kg of water vapor. How long would…

A: Take the surface of the Earth to be zero potential energy point. The work done by the pump must be…

Q: A 1.50 x 10°-kg car starts from rest and accelerates uniformly to 17.9 m/s in 11.3 s. Assume that…

A:

Q: You kick a 225 g rock from the edge of a cliff while hiking along the edge of the Grand Canyon. (a)…

A: Given: Rock mass m =225 g = 225×10-3 kg Time t1 =4 s

Q: A certain rain cloud at an altitude of 1.53 km contains 3.20 ✕ 107 kg of water vapor. How long would…

A: height, h = 1530 m  mass, m = 3.2 x 107 kg Power, P = 3.05 kW

Q: time of 7 seconds, a motorcycle can accelerate from rest to the speed v. Determine the amount of…

A:

Q: If an automobile engine delivers 46.4 hp of power, how much time will it take for the engine to do…

A: Power P=Wtt=WP