a Jeep is driving down a road at 75.0 mph. the engine is producing 45.5 hp...
a Jeep is driving down a road at 75.0 mph. the engine is producing 45.5 hp to maintain this speed. a) what is the force of the combined air and road resistance to the Jeep in Newton’s? b) convert this force to pounds
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a Jeep is
driving down a road at 75.0 mph. the engine is producing 45.5 hp...
You are driving down the road at 15.6 m/s (35 mph) when an ambulance passes you...
You are driving down the road at 15.6 m/s (35 mph) when an ambulance passes you with its siren blaring. The ambulance siren produces a frequency of 700 Hz. As the ambulance approaches you from behind, you hear a frequency of 730 Hz . The speed of sound in air is 344 m/s. What is the speed of the ambulance? The positive direction points from your car (listener) toward the ambulance (source). Express your answer in meters per second.
question 1 QUESTION 1 A car needs to generate 75.0 hp in order to maintain a...
question 1
QUESTION 1 A car needs to generate 75.0 hp in order to maintain a constant velocity of 27.3 m/s on a flat road. What is the magnitude of the total resistive force acting on the car (due to friction, air resistance, etc.)? (1 hp = 746 W) OA 2.05 x 103 N ОВ. 2.87 x 103 N Ос. 1.03 x 103 N. OD.2.75 N Ο Ε. 1.54 x 103 N.
A person is initially driving a car east down a straight road. The magnitude of the...
A person is initially driving a car east down a straight road. The magnitude of the instantaneous acceleration remains constant with time, and the direction of the acceleration is always to the west. The speed of the car is O decreasing but then increasing O increasing O increasing but then decreasing O constant. O decreasing. While standing at the edge of the roof of a building, you throw a stone upward with an initial speed 7.39 m/s. The stone subsequently...
please help. thank you lots You are driving down the road at 15.6 m/s (35 mph)...
please help. thank you lots
You are driving down the road at 15.6 m/s (35 mph) when an ambulance passes you with its siren blaring. The ambulance siren produces a frequency of 700 Hz. As the ambulance approaches you from behind, you hear a frequency of 740 Hz. The speed of sound in air is 344 m/s. Part A What is the speed of the ambulance? The positive direction points from your car istener) toward the ambulance (source) Express your...
1. You are driving down the freeway at a constant 60 mph (26.8 m/s)·There is a...
1. You are driving down the freeway at a constant 60 mph (26.8 m/s)·There is a truck in tot of you, and you estimate that every second you get 1 m closer to the truck. How fast is the truck going (in miles per hour)? 2. What is the velocity of the truck relative to you? Take the forward direction (the direction you are going in) to be positive 3. You are on an airplane and the flight screen informs...
QUESTION 1 A Mercedes-Benz 300SL, mass = 1,731 kg, is parked on a road that rises...
QUESTION 1 A Mercedes-Benz 300SL, mass = 1,731 kg, is parked on a road that rises above the horizontal 11 degrees. What is the magnitude of the normal force in N with 3 significant figures? (acceleration due to gravity = g =9.80 m/s-, down) QUESTION 2 A Mercedes-Benz 300SL, mass = 1,683 kg, is parked on a road that rises above the horizontal 19 degrees. What is the magnitude of the static frictional force that the ground exerts on the...
QUESTION 9 To maintain a constant speed, the force provided by a car's engine must equal...
QUESTION 9 To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). What is the drag force at 97.4 MPH for a Hummer H2? (Drag area for Hummer is 2.44 m² and look up Table 5.2 chap 5 for the drag coefficient) Express your answer in N with 3 significant figures. QUESTION 10 Calculate the terminal velocity a spherical rain drop, diameter...
You are cycling at a constant speed of 10.0 m/s on a level road. (a) If...
You are cycling at a constant speed of 10.0 m/s on a level road. (a) If the net resistive force acting against you from things like air resistance is 32.0 N, what is your power output as you pedal? (b) How much additional power is required to maintain this speed up a hill inclined at 3.00° with the horizontal? Assume the combined mass of you and your bicycle is 58.0 kg. If you need a value for the acceleration due...
A 1500 kg car begins Wing down a 5.0 inclined road with a speed of 30...
A 1500 kg car begins Wing down a 5.0 inclined road with a speed of 30 km/h. The engine is turned off. After the car has traveled 50 m along the road, its speed is 40 km/h (a) How much is the mechanical energy of the car reduced because of the net frictional force? (b) What is the magnitude of that net frictional force?
Driving on asphalt roads entails very little rolling resistance, so most of the energy of the...
Driving on asphalt roads entails very little rolling resistance, so most of the energy of the engine goes to overcoming air resistance. But driving slowly in dry sand is another story. If a 1500 kg car is driven in sand at 5.0 m/s, the coefficient of rolling friction is 0.06. in this case, nearly all of the energy that the car uses to move goes to overcoming rolling friction, so you can ignore air drag in this problem. a.) What...
question 1
QUESTION 1 A car needs to generate 75.0 hp in order to maintain a constant velocity of 27.3 m/s on a flat road. What is the magnitude of the total resistive force acting on the car (due to friction, air resistance, etc.)? (1 hp = 746 W) OA 2.05 x 103 N ОВ. 2.87 x 103 N Ос. 1.03 x 103 N. OD.2.75 N Ο Ε. 1.54 x 103 N.
A person is initially driving a car east down a straight road. The magnitude of the instantaneous acceleration remains constant with time, and the direction of the acceleration is always to the west. The speed of the car is O decreasing but then increasing O increasing O increasing but then decreasing O constant. O decreasing. While standing at the edge of the roof of a building, you throw a stone upward with an initial speed 7.39 m/s. The stone subsequently...
please help. thank you lots
You are driving down the road at 15.6 m/s (35 mph) when an ambulance passes you with its siren blaring. The ambulance siren produces a frequency of 700 Hz. As the ambulance approaches you from behind, you hear a frequency of 740 Hz. The speed of sound in air is 344 m/s. Part A What is the speed of the ambulance? The positive direction points from your car istener) toward the ambulance (source) Express your...
1. You are driving down the freeway at a constant 60 mph (26.8 m/s)·There is a truck in tot of you, and you estimate that every second you get 1 m closer to the truck. How fast is the truck going (in miles per hour)? 2. What is the velocity of the truck relative to you? Take the forward direction (the direction you are going in) to be positive 3. You are on an airplane and the flight screen informs...
QUESTION 1 A Mercedes-Benz 300SL, mass = 1,731 kg, is parked on a road that rises above the horizontal 11 degrees. What is the magnitude of the normal force in N with 3 significant figures? (acceleration due to gravity = g =9.80 m/s-, down) QUESTION 2 A Mercedes-Benz 300SL, mass = 1,683 kg, is parked on a road that rises above the horizontal 19 degrees. What is the magnitude of the static frictional force that the ground exerts on the...
QUESTION 9 To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). What is the drag force at 97.4 MPH for a Hummer H2? (Drag area for Hummer is 2.44 m² and look up Table 5.2 chap 5 for the drag coefficient) Express your answer in N with 3 significant figures. QUESTION 10 Calculate the terminal velocity a spherical rain drop, diameter...
A 1500 kg car begins Wing down a 5.0 inclined road with a speed of 30 km/h. The engine is turned off. After the car has traveled 50 m along the road, its speed is 40 km/h (a) How much is the mechanical energy of the car reduced because of the net frictional force? (b) What is the magnitude of that net frictional force?
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