A man of mass 60.0 kg takes 4 seconds to run up a 4-m high stairs. Which of the following gives the values of his power and average speed? *

Q: A child pulls on a wagon with a force of 65 N. If the wagon moves a total of 49m in 209 s, what is…

A: Average Power delivered by the child P=15.2 watt

Q: Novice piano movers have pushed a 1000 kg piano to a second-story window.  They plan to open the…

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Q: 6. Two cars are at a stop light. When the light turns green the car of mass m begins to move with…

A:

Q: A daredevil on a motorcycle leaves the end of a ramp with a speed of 30.5 m/s as in the figure…

A: Given, Initial velocity is 30.5 m/s velocity at maximum heigh is 28.8 m/s

Q: A daredevil on a motorcycle leaves the end of a ramp with a speed of 38.9 m/s as in the figure…

A: KEBottom-KEtop=PE0.5mvbottom2-0.5mvtop2=mghh=0.vbottom2-0.5vtop2g

Q: Tarzan, who weighs 722 N, swings from a cliff at the end of a convenient vine that is 17 m long (see…

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Q: 7. Which of the following is the best example of kinetic energy being transformed into potential…

A: Kinetic energy is the energy possessed due to motion of object while potential energy is the energy…

Q: A6.60-kg block slides with an initial speed of 1.78 m/s up a ramp inclined at an angle of 29.4° with…

A: Distance the block slides coming to rest is 0.17m

Q: You can think of the work-energy theorem as a second theory of motion, parallel to Newton's laws in…

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Q: Q1. A body of mass 40 kg climbs a vertical rope 10 meters in length in 15 sec with constant…

A: Given data:  Mass (m) = 40 kg Height (h) = 10 m Time (t) = 15 s Required: Work (W) and Power (P)

Q: Aminah and Ahmad get into an elevator which has a mass of 1500 kg. Both Aminah and Ahmad weight 50…

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Q: How much kinetic energy does a 0.3-kg stone have if it is thrown at 15 m/s? calculate to one…

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Q: A 10,000 kg shipping container is on a truck moving at 75 mph on a flat road. The driver brings the…

A: Given, mass m = 10000 Kg truck moving vf = 75 m/h = 167.77 m/s Force F = 2500 N We know the work…

Q: Which task requires more work? A) lifting the 10-kg sack 2 meters B) lifting the 10-kg sack 4…

A: In this question we have to find which task requires more work. Please give positive feedback if the…

Q: Mr. Sald and his family takes a rollercoaster ride in a Start (a) fantasy park as shown. What will…

A:

Q: Two cars are at a stop light. When the light turns green the car of mass m begins to move with…

A:

Q: A man exerts a 130 N force in pushing a wheelbarrow loaded with garden soil. If he pushes it 50 m at…

A: Given data: Force applied (F) = 130 N Displacement (d) = 50 m Angle between force and displacement…

Q: Monica pulls her daughter Jessie in a bike trailer. The trailer and Jessie together have a mass of…

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Q: A sports car with a mass of 1,385 kg is at rest on a flat, horizontal road. 5.4 s later, that car is…

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Q: A child pulls on a wagon with a force of 68 N. If the wagon moves a total of 41m in 206 s, what is…

A:

Q: A baseball is thrown straight up with initial speed ?0. If air resistance cannot be ignored, when…

A: Given that:- A baseball is thrown vertically upward with speed Vo.

Q: A box with a mass of 7.0kg is lifted very slowly (with essentially zero acceleration), though a…

A: The height from where box falls is, h=1.5 m The initial velocity of the box at the top is, u=0 m/s

Q: 9. In the Incline Energy lab, partners Anna Litical and Noah Formula give a 1.00-kg cart an initial…

A: Energy is defined as the capacity to do work. Higher energy implies that the object has a higher…

Q: A sled with mass 8.00 kg moves in a straight line on a fric- tionless horizontal surface. At one…

A: The net force acting on an object is the product of mass and the acceleration of the object. If the…

Q: Three runners, each 70 kg, leave the starting line at the bottom of a hill and race to the top of…

A: Given data: Mass (m) = 70 kg Runners starts from bottom of hill and reached at top of the hill  Race…

Q: 4) The total mass of the sled and the driver on it in the figure is 125 kg. The driver is moving up…

A: Explanation and solution shown in the picture below

Q: Nahed weighs 55 kg, she uses her scooter of mass 5 kg to go to her nearby friend's house. Her speed…

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Q: In the Incline Energy lab, partners Anna Litical and Noah Formula give a 1.00-kg cart an initial…

A: Given:  mass, m = 1 kg  u1 = 2.35 m/s  h1 = 0.125 m  h2 = 0.34 m

Q: A27000 kg airplane lands with a speed of 82 m/s on a stationary aircraft carrier deck that is 115 m…

A: Work done is -5.19×10^7 J

Q: A daredevil on a motorcycle leaves the end of a ramp with a speed of 39.6 m/s as in the figure…

A: Since the friction and air resistance are ignored; only the gravitational force acts on the…

Q: You push a 3 kg box from m to m with a force of N. The box had an initial speed of 5m/s . Answer…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The total mass of the sled and the driver on it in the figure is 125 kg. The driver is moving up a…

A:

Q: Patrick usually walks up three flights of stairs to his physics class without getting tired.…

A: Concept Power :- The rate of doing work or the rate of consumption of energy is called power.

Q: An automobile weighing 5000 N is driven down a 7° incline at a speed of 88 m/s as shown in the…

A: Given : Weight of vehicle, W= mg = 5000 N Initial Velocity of the vehicle, v = 88 m/s Final velocity…

Q: 12. Which of the following statements represent example of situation showing work? Select one: a. A…

A: Given,  Out of the given situations, which is showing work.  A) child applies force and become tired…

Q: 18. Complete the table below. Use the information in Model 2 or the graph in question 15 to estimate…

A: We have two cases of a man riding a bike uphill and downhill with velocities 12 m/s and 24 m/s…

Q: The work required by Neymar to push a box of soccer balls on a horizontal, frictionless floor to…

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Q: A 2.0 kg object moves along the x-axis, from x = 0.0 m to x = 30. m, subject to a single force F,…

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Q: Use energy conservation to find the approximate final speed of a basketball dropped from a height of…

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Q: You may have noticed runaway truck lanes while driving in the mountains. These gravel-filled lanes…

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Q: You may have noticed runaway truck lanes while driving in the mountains. These gravel-filled lanes…

A: The work-energy theorem gives us a relationship between work done by all the forces on the body to…

Q: A daredevil on a motorcycle leaves the end of a ramp with a speed of 32.4 m/s as in the figure…

A: velocity, v = 32.4 m/s  horizontal component of velocity, vx = 30.5 m/s

Q: You may have noticed runaway truck lanes while driving in the mountains. These gravel-filled lanes…

A:

Q: Q4 mechanical energy is conserved. Why prove this? (Ignore air resistance.). Tick below As a rock…

A: The given problem can be resolved using the concept of conservation of energy. The mechanical energy…

Q: Mrs. Salcedo's car of mass 2.4 x 10³ kg travelling on the highway when the teacher receives an…

A: From the work-energy theorem, we know that the amount of workdone is equal to the change in kinetic…

Q: Aileen, of mass m, drops from a tree limb at the same time that Jenny, also of mass m, begins her…

A: initial height was same for both cases.

Q: man pushes against a truck that is too heavy for him to move. Has work been done? Explain. include…

A: