Calculate the average force a 90.62kg sprinter exerts on the track to accelerate from 2.92m/s? to 7m/s? in a distance of 22.93m, if she encounters a headwind that exerts an average force of 28N against her. Use the concept of work-energy and show clear formula and substitution.

Q: How much work input by the second bicyclist's muscles was required to accelerate themselves…

A:

Q: Q1// Using the Work and Energy principles Only, solve the following Question: During a test a rocket…

A:

Q: Can I have an answer for this one, please?

A: Given values:- Distance,(d)=8 m -----(1) Work done,(W)=301 J ----(2) Suppose (F) force is exerted by…

Q: Assume that you are driving a car 2000kg car at the sped of 20m/s(72km/h). You then see a tree at…

A: Given : mass of car, m = 2000 kg              velocity of car, v = 20 m/s             coefficient of…

Q: A ski boat moves with constant velocity. Is the net force acting onthe boat doing work? Explain.

A: A ski boat

Q: Using energy considerations, calculate the average force (in N) a 67.0 kg sprinter exerts backward…

A:

Q: The figure here shows an overhead view of three horizontal forces acting on a cargo canister that…

A: F1=2.60 NF2=3.60 NF3=10.0 Nθ2=49°θ3=34°

Q: A7.80 g bullet has a speed of 580 m/s when it hits a target, causing the target to move 6.10 cm in…

A: It is given that m=7.8 g=7.8×10-3 kgu=580 m/sx=6.10 cm=0.0610 m

Q: A car requires 73.6 hp to maintain a constant speed of 20.4 m/s on a straight, flat road. Assuming…

A: Given data:  Power (P) = 73.6 hp Speed (v) = 20.4 m/s 1 hp = 746 W  Required: The magnitude of the…

Q: A car is stopped by a constant friction force that is independent of the car's speed. By what factor…

A: Solution: Given: m = mass of car v1 = initial speed of car in the first run v2 = initial speed of…

Q: A 75kg basketball player performs a vertical jump of 0.30m. Use the work/energy  approach to…

A: Given data, Mass m=75 kg Height h=0.3 m

Q: This is high school physics. Topic: Energy Conservation An unknown force is applied to a 8.0 kg…

A: Given that, Mass (m)= 8 kg Displacement (s)= 15 m Initial speed (u)= 10 m/s Final speed (v)= 20 m/s…

Q: Charmagne is driving along Marcos Hi-way at 22 m/s in her 1650 kg car. She slows down to 15 m/s when…

A:

Q: 70 kg block at rest on a frictionless,horizontal surface is acted upon by a force of 5.0 n for a…

A: SOlution: Given that  m = 0.7 kg F = 5 N d = 3 m KE = 5 J

Q: The world record for the men's high jump is 2.45 m. To reach that height, a) what is the minimum…

A:

Q: A block of mass m = 300 g falls on a spring with k = 3.0 N/cm, which shortens by x = 12.0 cm.…

A:

Q: A 25g pen moving at some unknown initial velocity is subject to a constant force of kinetic friction…

A:

Q: A 60.0 kg skier with an initial speed of 13.0 m/s coasts up a 2.50 m high rise as shown in the…

A:

Q: A 10N horizontal force is exerted on a 100kg object that slides on a frictionless, horizontal…

A: First method: According to the Newton’s second law, the acceleration of the object is, F=maa=Fm=10…

Q: A 5-kg bucket is lifted from the bottom of a well 12 m deep with a rope that has mass 0.5 kg/m. The…

A: The mass of the bucket = 5 kgThe mass of the water in the bucket= 34(36)kg=27kg.So the total mass of…

Q: Problem 6. Work-Energy Theorem: The kinetic friction force tha a horizontal surface exerts on a…

A:

Q: A world-class sprinter of mass 70 kg running a 100 m dash was clocked at 5.4 m/s 1.0 s after…

A: The given data are: m=70 kgv1=5.4 m/st1=1 sv2=10 m/st2=1.5 s

Q: A lawn mower is pushed a distance of 100 ft. along a horizontal path by a constant force of 60 Ibs.…

A:

Q: A 5.5 kg textbook is raised a distance of 35.6 cm as a student prepares to leave for school. How…

A: Given : m = 5.5 kg h = 35.6 cm = 0.356 m

Q: A 8.71 kg box initially at rest on a horizontal surface is pushed by a constant force of 32.1 N that…

A:

Q: of kinetic friction be e the sled moves be

A: Given: Mass of sled is 5 kg Initial speed is 2.4 m/s Kinetic friction coefficient is 0.10

Q: A 7.5 kg box initially at rest on a horizontal surface is pushed by a constant force of 34.2 N that…

A: Given, m=7.5kgF=34.20θ=35.60f=16.6Nd=4.75m

Q: A (3 kg) object has of (6 Ê - 23) m ls. Find the magnitude of the initial velocity? what is its…

A:

Q: CIs pulled by a horizontal force across a surface with 0.50. Find the work done over a distance of…

A:

Q: A car of mass 920.0 kg accelerates away from an intersection on a horizontal road. When the car…

A: mass of car (m) = 920 kg speed (v) = 12.4 msNet power (P) = 5300 W

Q: A skier of mass 89kg starts from rest at the top of the hill that is inclined 35 degrees with…

A: Given angle is 35 degree coefficient of kinetic friction- 0,25 Hill height=50 meter

Q: A 80 kg man runs up a a flight of stairs with a height of 10 meters in 10 seconds. calculate…

A:

Q: A 60.0 kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m—high rise.  Find her final…

A: skier weight=60.0 kg speed of skier= 12.0 m/s height= 2.50 m coefficient of friction= 0.0800 angle…

Q: A parachute is used to slow a 3.1 kg model rocket from a speed of 32 m/s to 10 m/s. If the parachute…

A: Apply work-energy theorem on the parachute-rocket system, and solve for the work-done by the…

Q: 10. DETAILS MY NOTES (b) the change in the potential energy of the system ASK YOUR TEACHER A single…

A:

Q: A 70 kg cyclist develops 210 watts of power while pedaling at a constant velocity of 7.0 m/s east.…

A: Given  Mass of cyclist m=70kg Power P=210W Speed v=7m/s

Q: An elevator is  pulled 4.00m upwards from rest with a rope under 13000N of tension. The weight of…

A: Hai, since there are multiple sub parts posted, we will answer the first three sub parts. 1. Take…

Q: 66. A 1200 kg car travels at 25 m/s. The brakes are applied and the car slows down at –8.0 m/s². How…

A:

Q: A little red wagon with mass 7.0 kg moves in a straight line on a frictionless horizontal surface.…

A: m=Mass of wagon=7 kgu=Initial velocity of wagon=4 m/sv=Final velocity of wagonF=Force applied=10…

Q: A 2.50 kg box is pulled by a constant force of 16 N that is exerted at an angle 36.9° above the…

A:

Q: A 1400-NN crate rests on the floor. How much work is required to move it at constant speed 5.0 mm…

A: Answer :-  Force (f) = 1400 N  Displacement (S) = 5 mm                                  = 0.005 m…

Q: F = 5000 N 0= 36.9° fk = 3 500 N d =20m Weight = 14 700 N

A:

Q: Using energy considerations, calculate the average force (in N) a 69.0 kg sprinter exerts backward…

A: Given Data : The mass of the sprinter is given as m = 69 Kg. The initial velocity of the sprinter is…

Q: A sprinter with a mass of 55 kg is running at a speed of 3.8 m/s. In a burst of speed to win the…

A: