3. A mass is being pulled across ice on a sled, the total weight including the sled being 80 lb. The resistance offered by the ice to the runners is negligible, and the air offers a resistance in pounds equal to five times the velocity (ft/s) of the sled. Find the constant force (in pounds) that must be exerted on the sled to give it a terminal velocity of 10 mi/hr, and the velocity and distance travelled at

Q: s to the top of a 3600-m-high mountain. The climb is made in 6.0 h starting at an elevation of 2200…

A: Given:-  The mass of the hiker m = 60 kg  The height of the mountain H = 3600 m  The time taken to…

Q: Write a short note on work?

A: Work

Q: (Prob. 1,8 A heavy rope, 10 m long, weighs 0.5 N/m and hangs over the edge of a building 100 m high.…

A:

Q: (a) What is the average power consumption in watts of an appliance that uses 2.79 kW · h of energy…

A: Given , Energy(E) = 2.79 kW.h OR.         E= (2.79)(3600)kilojoule                E= 10044 kJ

Q: How much work is needed to lift a 100 pound weight from 10 feet above ground to the top of a 50 foot…

A:

Q: (A) What is the kinetic energy in joules of a 1130-kg automobile traveling at 94 km/h? (b) How much…

A:

Q: Define gravitational potential. Use the data below to show that its value at the Earth's surface is…

A: We know that The gravitational potential energy at the surface of the earth is U = MgR U/M = gR Here…

Q: What must be the velocity of a moving body of mass 2 kg so that its kinetic energy is 25 J?

A:

Q: What work is done on a level track in bringing the velocity of a train weighing 200 tons from zero…

A: Given: The mass of the train is m=200 ton=2×105 kg. The initial velocity is u=0 mihr =0 ms. The…

Q: (A.) What is the kinetic energy in joules of a 1050-kg automobile traveling at 89 km/h? (B.) How…

A: A.Kinetic energy of automobile is

Q: the electrical energy used by a household whose monthly electrical bill is $42, computed at the rate…

A: Givenmonthly electrical bill is $42At rate of $0.07 per kWh.

Q: A satellite from the Glonass navigation system weighs 7,350 N on the surface of Earth. How much work…

A:

Q: In order for a rocket to escape from th

A:

Q: A small gasoline‐powered car weighs 1100 kg. The rear seating weighs 34 kg. How much energy and…

A: GIVEN Weight of the gasoline powered car = 1100 kg rear seating weighs 34 kg Lifetime of the car =…

Q: A body of mass 2 kg was dropped down from a height. If the KE attained by it is 400 J, find the…

A: Solution:-Given thatmass of body (m)=2 kgKE attained by the mass (KE)=400 J

Q: Show that the Force of Gravity is conservative.

A:

Q: [Numbers change] If this amount of energy were used to lift a person with mass 92 kg off the ground,…

A: Solution: let us calculate the amount of energy from the information of the power and of the laptop…

Q: Simplify Derivation + Integration

A: To Find :  Find the work done and do the calculation in detail

Q: Certain force acting on a 20 kg mass ch.urlyc its velocity from 5 m/s to 2 m/s. Calcukate the work…

A: Introduction :  In this question we are provided it value of mass , initial velocity and final…

Q: Problem 2) An electric lawn mower runs on 1000 watts of electrical power input. The same mower can…

A: Given data:  Power (P) = 1000 W Time (t) = 20 minutes = 1200 seconds Energy required (Eout) =…

Q: A crate of mass 40 kg is pushed along a floor with a force of 20 N for a distance of 10 m.Calculate…

A: Given data :              Distance    =    d              Force     =   F      To find :…

Q: Using eneray belane for d closod syateom chod cioleel Jor madels and negleting chenses in kinetic…

A: Solution:-Given thatmass of air (m)=0.2 kgIsochoric processInitial temperature (T1)=300 KFinal…

Q: A crate of mass 60 kg is pushed along a floor with a force of 18 N for a distance of 3 m. Calculate…

A: Mass ( m ) = 60 kg  Force ( F ) = 18 N  Displacement ( d ) = 3 m

Q: Why should the angle of swing be small few degrees), or, what would happen if the angle were large?

A: For oscillation of a bob hanging from a thread from a fixed point as shown in diagram below we have.

Q: (c) Using your answer from the previous part, roughly how much kinetic energy (in Joules) was…

A:

Q: (c) For a system of N atoms, energy of each atom is given as 1 E = (P² + p²) + ½ ma² (x² + y²) + a(x…

A: Step 1:  Step 2:  Step 3:  Step 4:

Q: To what distance has a body of 480N been lifted, if it has done a work of 960J?

A: Given data: Weight of the body (w) = 480 N Work done = 960 J Need to determine the lifted distance.

Q: Given: The energy equivalent of one gallon of gasoline is 1.3 x 10° J. A compact car has a mass of…

A: Given: The energy equivalent of one gallon of gasoline is Ee,gasoline=1.3×108 J/gal, The mass of…

Q: need help on attatched question

A: Write the expression for potential energy

Q: A car of mass 500kg moves along a straight level road. The engine of the car works at a constant…

A: Concept used: Basic translational kinematics is used.

Q: Consider a mass, m, moving under the influence of an effective potential energy -a b + 2 T 7.2 U(r)…

A:

Q: Compute the electrical energy used by a household whose monthly electrical bill is $43, computed at…

A: Given  Monthly bill = $ 43 Rate = $ 0.05 Mass = 1985 kg

Q: The done work for man has power * (5.2 Watt) during (1 hours) is

A: Given: Power P=5.2 Watt Time  t=1 hours=1×60×60=3600 s

Q: Would work remain the same and why?

A:

Q: A 20-kg cannonball is fired straight up in the air from the ground and reaches a final height of 125…

A:

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: