a 1800 kg car experiences a combined force of air resistance and friction that has the...
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a 1800 kg car experiences a combined force of air resistance
and friction that has the...
A vehicle of mass 2000 kg has a constant resistance to motion of 3000 N. The...
A vehicle of mass 2000 kg has a constant resistance to motion of
3000 N. The maximum speed of the vehicle, when travelling on a
horizontal road, is 120 km/hour. Find the acceleration of the car
when it is travelling at a speed of 50 km/hour up a hill inclined
at an angle of 3o to the horizontal, with the engine
operating at maximum power (assume the resistance to motion
remains unchanged whether the car is travelling uphill or
horizonally...
The 1800-kg car descends a hill of angle 0 3°. The drag force due to air...
The 1800-kg car descends a hill of angle 0 3°. The drag force due to air resistance is k 0.45 kg/m D kv2 for Use the sketch to complete a free-body diagram. From an initial velocity of 29 m/s (65 mph), the car coasts 1600 m along the slope. Determine the velocity at that point Hint: After finding the acceleration, choose a dr vs dvs to integrate the kinematics; the resulting integral simplifies with the substitution, u = denominator, which...
The big downhill run on the Diamondback roller coaster at King's Island is inclined 80 ∘...
The big downhill run on the Diamondback roller coaster at King's Island is inclined 80 ∘ below horizontal and the the total drop in height is 49.4 m (162 ft). a) If the coefficient of kinetic friction for going along the track is μk=0.26 , what is the magnitude of the friction force on a 1800-kg set of cars? (Express your answer to two significant figures and include appropriate units) b) How much work is done on the set of...
A force of 5500 N is required to overcome road friction and air resistance exerted on...
A force of 5500 N is required to overcome road friction and air resistance exerted on a car traveling at 95 km/h. Calculate the power generated by the engine of the car. (3 points) Please type your answer, Please do not write on the Paper and post it.
1 The motorcycle has a mass of 750 kg and can maintain a steady speed of...
1 The motorcycle has a mass of 750 kg and can maintain a steady speed of 30 ms-t when travelling up a hill inclined at arcsin to the horizontal with the engine working at 50 kW. 4 Find the acceleration of the car when it is travelling down the same hill with the engine working at 30 kW at the instant when the speed is 20 ms-1. Given that the resistance to motion of a car is proportional to the...
P-? theta Problem #9 What is the power in horsepower (hp) necessary to keep a car...
P-? theta Problem #9 What is the power in horsepower (hp) necessary to keep a car with of 1.200 kg constant angle 13 degrees (ignore air resistance) going at a constant speed (v) of 54 mph (24 m/s) up a hill of Enter value of the power in hp: (or type E to end): |
Consider a Porsche 911 sports car with a mass of 1900 kg. The air drag force...
Consider a Porsche 911 sports car with a mass of 1900 kg. The air drag force at highway speeds can be approximately calculated as: F_drag = 1/2 C p Av^2 where p = 1.2 kg/m^3 is the density of air, A is the front area of the car, C is the drag coefficient and v is the velocity. For the Porsche 911, we can take A - 2.3 m^2 and C = 0.28. What is the power necessary to overcome...
St.A balis thrown directy upward and experiences no air resistance. Which one of the following statements...
St.A balis thrown directy upward and experiences no air resistance. Which one of the following statements about its motion is correct? a. The velocity of the ball is downward while it is traveling up and upward while it is traveling down. b. The velocity of the ball is upward while it is traveling up and downward while it is traveling down but is zero at the highest point when the ball stops. c. The velocity of the ball is downward...
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car,...
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 72.0 km/h , to his enemy's car, which is going 128 km/h . The enemy's car is 14.3 m in front of the Indy's when he lets go of the grenade. Part A If Indy throws the grenade so its initial velocity relative to him is at an angle of 45 ∘ above the horizontal, what should the magnitude of the...
A 1300-kg car, initially at rest, is initially accelerated at 4.9m/s2. After the car moves 550m,...
A 1300-kg car, initially at rest, is initially accelerated at 4.9m/s2. After the car moves 550m, the engine is cut off. The car then moves a distance of 1230 before coming to a stop. Assume the road to be level and that g = 10 N/kg. a) What is in m/s, the magnitude of the velocity of the car at the end of the first 550m? b) What is in m/s2, the magnitude of the acceleration of the car while...
A vehicle of mass 2000 kg has a constant resistance to motion of
3000 N. The maximum speed of the vehicle, when travelling on a
horizontal road, is 120 km/hour. Find the acceleration of the car
when it is travelling at a speed of 50 km/hour up a hill inclined
at an angle of 3o to the horizontal, with the engine
operating at maximum power (assume the resistance to motion
remains unchanged whether the car is travelling uphill or
horizonally...
The 1800-kg car descends a hill of angle 0 3°. The drag force due to air resistance is k 0.45 kg/m D kv2 for Use the sketch to complete a free-body diagram. From an initial velocity of 29 m/s (65 mph), the car coasts 1600 m along the slope. Determine the velocity at that point Hint: After finding the acceleration, choose a dr vs dvs to integrate the kinematics; the resulting integral simplifies with the substitution, u = denominator, which...
1 The motorcycle has a mass of 750 kg and can maintain a steady speed of 30 ms-t when travelling up a hill inclined at arcsin to the horizontal with the engine working at 50 kW. 4 Find the acceleration of the car when it is travelling down the same hill with the engine working at 30 kW at the instant when the speed is 20 ms-1. Given that the resistance to motion of a car is proportional to the...
P-? theta Problem #9 What is the power in horsepower (hp) necessary to keep a car with of 1.200 kg constant angle 13 degrees (ignore air resistance) going at a constant speed (v) of 54 mph (24 m/s) up a hill of Enter value of the power in hp: (or type E to end): |
Consider a Porsche 911 sports car with a mass of 1900 kg. The air drag force at highway speeds can be approximately calculated as: F_drag = 1/2 C p Av^2 where p = 1.2 kg/m^3 is the density of air, A is the front area of the car, C is the drag coefficient and v is the velocity. For the Porsche 911, we can take A - 2.3 m^2 and C = 0.28. What is the power necessary to overcome...
St.A balis thrown directy upward and experiences no air resistance. Which one of the following statements about its motion is correct? a. The velocity of the ball is downward while it is traveling up and upward while it is traveling down. b. The velocity of the ball is upward while it is traveling up and downward while it is traveling down but is zero at the highest point when the ball stops. c. The velocity of the ball is downward...
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