What average power is needed to lift a 65-kg vendor vertically upward at a uniform speed of 0.44 m/s? * a.280 W   b.243 W   c.115 W   d.25 W   e.230 W

Q: 2.A box is pushed by force of 300 N up an inclined plane (incline angle = 30.0°). The mass of the…

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Q: As Chinook salmon swim upstream in theYukon River to spawn, they must travel about 3000 km in…

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Q: 2. A 1.0 kg particle is moving at a speed of 4.0 m/s at t = 0 s. The kinetic energy of the particle…

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A: (a) Using Work-Energy theorem, net work required is,

Q: A block with mass m = 2.5 kg slides head-on to a spring with spring constant k = 320 N/m . When the…

A: Given data: Mass of the block m = 2.5kg Spring constant k =320 N/m Compressed length x= 25.0 cm…

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Q: A pump is required to lift 800 kg (about 200 gallons) of water per minute from a well 10 meters deep…

A: Given, Mass of water, m=800kg Depth of the well, d=10.0 m Speed, v=20.0 m/s Acceleration due to…

Q: A 64 kg human sprinter can accelerate from rest to 10 m/sm/s in 3.2 s . During the same time…

A: P=∆E∆t=0.5mv2f-v2i∆t

Q: A 48 g particle is moving to the left at 12 m/s. How much net work must be done on the particle to…

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Q: A 0.800-kg particle has a speed of 1.90 m/s at point A and kinetic energy of 7.60 J at point B. (a)…

A: The mass of the particle, m=0.800 kg The velocity of the particle at point A, vA=1.90 m/s The…

Q: A car accelerates from 0 to 38.3 m/s in 3.67 s. The mass of the car is 1.02e+03 kg. (a) What is the…

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Q: 4) A roller coaster of mass 80.0 kg is moving with a speed of 20.0 m/s at position A as shown in the…

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Q: How much power does it take to do 450 J of work in 5 seconds?   A. 0.011 W   B. 22.50 W    C.…

A: Given data: Energy, E=450 J Time, T=5 s

Q: 4) A roller coaster of mass 80.0 kg is moving with a speed of 20.0 m/s at position A as shown in the…

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Q: A person drags a box across a floor by applying a horizontal force of 10 N. The kinetic frictional…

A: Given: The applied force is F=10 N. The frictional force is Ff=4 N. The displacement is d=0.5 m.…

Q: What is its kinetic energy at the low point? (You must provide an answer before moving to the next…

A: Given data:  Mass (m) = 0.15 kg Velocity (v) = 9 m/s Required: Kinetic energy (KE)

Q: How much work can a 120 W motor do in 3.0 seconds? (120 W is the power of the motor.) Your answer: O…

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Q: ch work (úin Joules) is done in lifting a 2.5 kg dictionary from the floor onto a shelf 1.9 m high?…

A: Since we only answer upto 3 sub-parts, we will answer the first 3. Please resubmit the question and…

Q: A block with a mass of 43.0 kg is pushed with a horizontal force of 150 N. The block moves at a…

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Q: A 5 kg box is pushed 1 m from rest across horizontal ground using a force of 25 N applied at 30°…

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Q: A 12.0 kg box is pulled 3.00 m to the right along the floor by applied force P=40.0N at 30.0…

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Q: A small 65g toy rocket is launched straight up from the ground at 120 km/h (a) What is the kinetic…

A: Given The mass of the rocket is m=65 g=65×10-3 kg. The initial velocity of the rocket is v=120…

Q: The loaded cab of an elevator has a mass of 3.60 × 103 kg and moves 220. m up the shaft in 20.0 s at…

A: Given Mass = m = 3.60 × 103 kg Distance moved = s = 220 m We have to calculate rate of work done on…

Q: In the figure, a block of mass m = 3.90 kg slides head on into a spring of spring constant k = 320…

A: Given information: Here, m is the block’s mass, k is the spring’s constant, x is the compression,…

Q: (a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp = 746 W) to…

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Q: 3. a 0.35-kg fruit is falling from a tree with a speed of 5.0 m/s after t = 1.0 s. At t= 2.0 s, the…

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Q: A 15 kg block is accelerated at 2.0 m/s2 along a horizontal frictionless surface, with the speed…

A: Given:  mass of block, m = 15 kg  acceleration, a = 2 m/s2 initial velocity, u = 10 m/s  final…

Q: A 0.800-kg particle has a speed of 1.60 m/s at point and kinetic energy of 7.70 J at point B . (a)…

A: Given,

Q: A stunt man jumps from the top of a tall platform and into a swimming pool below. His potential…

A: Introduction: From the law of conservation of the energy remain constant, it can be transform from…

Q: A 0.400-kg particle has a speed of 1.50 m/s at point A and kinetic energy of 7.60 J at point B. (a)…

A: Let the mass of the particle be denoted as mKinetic energy at point A and B be denoted as (K.E)A…

Q: A 25.0 kg child plays on a swing having support ropes that are 2.20 m long. Her brother pulls her…

A: It is given that,  α=42om=25 kgv1=0h=2.20 m

Q: A slingshot will shoot a 10.0-g pebble 22.0 m straight up. (a) How much potential energy is stored…

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Q: A 70.5-kg hiker starts at an elevation of 1260 m and climbs to the top of a peak 2800 m high.…

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Q: 42.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 136…

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Q: A 0.42 kg particle has a speed of 5.0 m/s at point A and kinetic energy of 7.5 J at point B. (a)…

A: Write the given values of this problem. m=0.42 kgvA=5 m/sK.EB=7.5 J

Q: Getting water from a reservoir requires pumping it with the use of a motor. Using a motor driven…

A: Given,  Mass of water lifted (m) = 3×106  kg Average height (h) = 80 m ttime taken = 12 min= 720 sec

Q: The loaded cab of an elevator has a mass of 1.40 × 10° kg and moves 246. m up the shaft in 21.0 s at…

A: The rate of the doing of the work done by the force at a given instant is called instantaneous power…

Q: A surfer is catching a wave. Suppose she starts at the top of the wave with a speed of 1.4 m/s and…

A: Given: Mass of surfer(m) = 59 kg vi=1.4 m/s vf=9.4 m/s Vertical height (h)= 2.7 m

Q: A 55-kg skateboarder enters a ramp moving horizontally with a speed of 6.5 m/s, and leaves the ramp…

A: m = 55 kg v = 6.5 m/sV = 4.1 m/s

Q: 4) A roller coaster of mass 80.0 kg is moving with a speed of 20.0 m/s at position A as shown in the…

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