5. How much time does it take for a rock dropped from a cliff to fall 180 meters? Assume no air drag.
Q: 115. An 800-newton person is standing in an elevator. If the upward force of the elevator on the…
A: Given,
Q: Based on the graph, what is the velocity for best L/D in calm air V(kts) 30 60 90 120 150 180 -1…
A: As, the sink ratio is defined as, Vz=v×DL where V is the velocity, D is the drag and L is the lift…
Q: 5. An airplane with a weight of 11,000 N cruises at 180 km/h in level flight 2300 m above the…
A: Given: Weight of plane =11000 N Speed v =180 kmph
Q: 9. The gravity on the moon is about 1.6m. If a person jumps with an initial velocity of 2 off the…
A: Solution:-Given thatGravity on moon (g)=1.6 m/s2Initial velocity (u)=2 m/s
Q: 3. A block initially traveling at 2 m/s to the right slides 3 m before it comes to rest. What is the…
A:
Q: . There are about 160,000 road accidents in Canada every year. According to the Transportation…
A: (a) During collision of two vehicles vehicle gets stopped instantly but our bodies remain in motion…
Q: An 8.0 kg object moving with an initial velocity of 8.0 m/s on a surface comes to rest due to…
A: m = 8 kg Initial velocity (v) = 8.0 m/s Horizontal distance (x) = 10 m g =10 m/s2
Q: 7. A 1250 kg car accelerates from rest to 6.13 m/s over a distance of 8.58 m. Calculate the average…
A:
Q: A car collides with a semi-truck head on with both vehicles travelling at 50mph. Which vehicle…
A: Given data: Car collides with semi-truck Required: Vehicle that exerts greater force
Q: 10. What is the tension in a crane's cable when it is used to lower a 1100 kg box vertically…
A: Given. mass of the box, m= 1100 kgdown ward acceleration, a = 0.4 m/sec2 Gravitational…
Q: 6. An astronaut has a weight of 500 N on the Earth. What is his/her weight on the planet with g =…
A: The weight of the astronaut on Earth is 500 N. The acceleration due to gravity on the planet is 0.65…
Q: An object has a mass of 2 kg. a) What is its weight? b) If it is dropped from rest off a cliff, how…
A:
Q: 1. For a short period of time, the frictional driving force acting on the wheels of the 2200-kg van…
A: We are given with force and mass of the van? From this we can find acceleration of the van. Using…
Q: 3. The organizers of a snowboarding competition have decided that they need to get an engineer to…
A:
Q: 6. Suppose that, while driving on a dry road, a driver slams on the brakes. Let D be the distance…
A: The drag factor on asphalt road is 0.75 and the braking distance is 210 feet.
Q: 5. An object with a mass of 7.5 kg accelerates 8.3 m/s? when an unknown force is applied to it. What…
A: Given mass of object m = 7.5 kg acceleration of object a = 8.3 m/s2
Q: 2. How much force would a car's tires need to provide to accelerate an 1800 kg car at a rate of 4.0…
A:
Q: 2. A 15 kg box sits atop a 25 kg box inside an elevator. If the elevator was accelerating downwards…
A:
Q: A 200m2 wall on a building has a drag coefficient of 0.4. It is rated to a maximum wind force of…
A:
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- 5. A ball is thrown with an initial velocity of 8.5 m/s at an angle of 30.0⁰ from the horizontal. How long the ball is in flight? (assume g = 9.81 m/s²) 6. The planet A has a mass of 1.972-1024 kg and the planet B has a mass of 5.348-1024 kg. What is the distance between the planet A and planet B if the force of gravity between them is 2.111-1022 N?. (assume G = 6.670-10-¹¹ Nm²/kg²) 177035. A 2.0-kg purse is dropped from the top of the Leaning Tower of Pisa and falls 55 m before reaching the ground with a speed of 27 m/s. What was the average force of air resistance?20. A 1,300 kg car accelerates uniformly from rest to 60km/h over a distance of 40 m. How much force is being applied by the engine to do this ?.
- 2. A 850kg elevator is designed to carry 10 people (m= 50kg) safely, and accelerate upwards at 0.3 m/s^2. What minimum tension should the cable be able to support.1. A 100-g box slides across a frictionless horizontal plane and is accelerating at 15 m/s2. What is the opposing force needed to reduce the acceleration to 5 m/s2. Note that the question is asking for the opposing force to the original force, NOT the resultant force that results to 5 m/s2.