1.A pickup truck is traveling down the highway at a steady speed of 31.1 m/s. The...
1.A pickup truck is traveling down the highway at a steady speed of 31.1 m/s. The truck has a drag coefficient of 0.45 and a cross-sectional area of the truck is 3.3 3.3 m2. Assume the density of the air is 1.2 1.2 kg/m3. How much energy does the truck lose to air resistance per hour? Give your answer in units of MJ (megajoules).
2.An unknown object is placed inside of a spherical container and dropped from an airplane. When empty, the spherical container has a mass of 3.00 3.00 kg. The container has a drag coefficient of 0.500 and a diameter of 37.6 37.6 cm. With the unknown object inside, the container reaches a terminal velocity of 57.4 57.4 m/s. What is the mass of the unknown object? Use 1.22 1.22 kg/m3for the density of air.
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1.A pickup truck is traveling down the highway at a steady speed
of 31.1 m/s. The...
A pickup truck is traveling down the road with a momentum of 5.1x104 kg m/s (the...
A pickup truck is traveling down the road with a momentum of 5.1x104 kg m/s (the pickup truck is moving at 50 mph), that is measured with an uncertainty of ± 500 kg m/s. . How precisely can its position be determined at the same time?
A spherical raindrop 3.3 mm in diameter falls through a vertical distance of 4000 m. Take...
A spherical raindrop 3.3 mm in diameter falls through a vertical distance of 4000 m. Take the cross-sectional area of a raindrop ,drag coefficient 0.45, density of water to be 1000 kg/m3, and density of air to be 1.2 kg/m3. (a) Calculate the speed a spherical raindrop would achieve falling from 4000 m in the absence of air drag 280 m/s (b) What would its speed be at the end of 4000 m when there is air drag? 1.091 What...
The truck in that example is traveling at 33 m/s. The density of air is 1.19...
The truck in that example is traveling at 33 m/s. The density of air is 1.19 kg/m3. By how much does the pressure inside the cargo area beneath the tarpaulin exceed the outside pressure?
A pickup truck with mass 18• 105 gm is traveling eastbound at 15 m/s, while a compact car (900 kg) is traveling westbound with-15 m/s
A pickup truck with mass 18• 105 gm is traveling eastbound at 15 m/s, while a compact car (900 kg) is traveling westbound with-15 m/s. The vehicles collide head-on, becoming entangled. a. Find the speed of the entangled vehicles after the collision. b. Find the change in velocity of each vehicle. c. Find the change in kinetic energy d. If the mass of both the vehicles were doubled, calculate how would the final velocity and change in kinetic energy be affected?
9 Required information An airplane has a mass of 48,000 kg, a wing area of 340 m*, a maximum lift coefficient of 3.2, and a cruising drag coefficient of O.03 at an altitude of 12.000 m. Take the dens...
9 Required information An airplane has a mass of 48,000 kg, a wing area of 340 m*, a maximum lift coefficient of 3.2, and a cruising drag coefficient of O.03 at an altitude of 12.000 m. Take the density of standard air as p1-1225 kg/m3 at sea level and p2 0.312 kg/m at 12,000 m altitude. Determine the safe takeoff speed at sea level, assuming it is 20 percent over the stall speed The safe takeoff speed at sea level...
A medium-sized jet has a 3.8-m-diameter fuselage and a loaded mass of 85,000 kg. The drag...
A medium-sized jet has a 3.8-m-diameter fuselage and a loaded mass of 85,000 kg. The drag on an airplane is primarily due to the cylindrical fuselage, and aerodynamic shaping gives it a drag coefficient of 0.37. How much thrust must the jets engines provide to cruise at 230 m/s at an altitude where the air density is 1.8 kg/m3?
1. A 10,000 KG truck is traveling at +20 m/s. What would happen to the momentum...
1. A 10,000 KG truck is traveling at +20 m/s. What would
happen to the momentum of the truck if it increases in velocity in
the same direction?
2. A 120 KG rugby player is running toward another player at 5
m/s. How much force needs to be applied over one second in order to
bring him to a stop?
3. if the acceleration of an object decreases, what happens to
the inertia?
A 10,000kg truck is traveling at +20m/s....
While driving down a flat highway at a speed of 29.0 m/s the wheel of a...
While driving down a flat highway at a speed of 29.0 m/s the wheel of a truck detaches from its axle and rolls towards a hill. The 45.0 kg wheel rolls without slipping up a hill where it stops at a location 80.0 m higher than the bottom of the hill. What is the wheel's moment of inertia in kgm I if its radius is 0.45 m? (Do not assume the wheel has a mass distribution that is on the...
While driving down a flat highway at a speed of 29.0 m/s the wheel of a...
While driving down a flat highway at a speed of 29.0 m/s the wheel of a truck detaches from its axle and rolls towards a hill. The 45.0 kg wheel rolls without slipping up a hill where it stops at a location 80.0 m higher than the bottom of the hill. What is the wheel's moment of inertia in kgm I if its radius is 0.45 m? (Do not assume the wheel has a mass distribution that is on the...
A truck with a mass of 1710 kg and moving with a speed of 14.0 m/s...
A truck with a mass of 1710 kg and moving with a speed of 14.0 m/s rear-ends a 613 kg car stopped at an intersection. The collision is approximately elastic since the car is in neutral, the brakes are off, the metal bumpers line up well and do not get damaged. Find the speed of both vehicles after the collision in meters per second. m/s truck m/s car As shown in the figure below, object m, = 1.50 kg starts...
A spherical raindrop 3.3 mm in diameter falls through a vertical distance of 4000 m. Take the cross-sectional area of a raindrop ,drag coefficient 0.45, density of water to be 1000 kg/m3, and density of air to be 1.2 kg/m3. (a) Calculate the speed a spherical raindrop would achieve falling from 4000 m in the absence of air drag 280 m/s (b) What would its speed be at the end of 4000 m when there is air drag? 1.091 What...
9 Required information An airplane has a mass of 48,000 kg, a wing area of 340 m*, a maximum lift coefficient of 3.2, and a cruising drag coefficient of O.03 at an altitude of 12.000 m. Take the density of standard air as p1-1225 kg/m3 at sea level and p2 0.312 kg/m at 12,000 m altitude. Determine the safe takeoff speed at sea level, assuming it is 20 percent over the stall speed The safe takeoff speed at sea level...
1. A 10,000 KG truck is traveling at +20 m/s. What would
happen to the momentum of the truck if it increases in velocity in
the same direction?
2. A 120 KG rugby player is running toward another player at 5
m/s. How much force needs to be applied over one second in order to
bring him to a stop?
3. if the acceleration of an object decreases, what happens to
the inertia?
A 10,000kg truck is traveling at +20m/s....
While driving down a flat highway at a speed of 29.0 m/s the wheel of a truck detaches from its axle and rolls towards a hill. The 45.0 kg wheel rolls without slipping up a hill where it stops at a location 80.0 m higher than the bottom of the hill. What is the wheel's moment of inertia in kgm I if its radius is 0.45 m? (Do not assume the wheel has a mass distribution that is on the...
While driving down a flat highway at a speed of 29.0 m/s the wheel of a truck detaches from its axle and rolls towards a hill. The 45.0 kg wheel rolls without slipping up a hill where it stops at a location 80.0 m higher than the bottom of the hill. What is the wheel's moment of inertia in kgm I if its radius is 0.45 m? (Do not assume the wheel has a mass distribution that is on the...
A truck with a mass of 1710 kg and moving with a speed of 14.0 m/s rear-ends a 613 kg car stopped at an intersection. The collision is approximately elastic since the car is in neutral, the brakes are off, the metal bumpers line up well and do not get damaged. Find the speed of both vehicles after the collision in meters per second. m/s truck m/s car As shown in the figure below, object m, = 1.50 kg starts...
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