4. Two men, Joel and Jerry, push against a car that has stalled, trying unsuccessfully to get it moving. Jerry stops after 10 min., while Joel is able to push for 5.0 min. longer. Compare the work they do on the car. a. Joel does 75% more work than Jerry O b. Joel does 50% more work than Jerry O c. Joel does 25% more work than Jerry d. Neither Joel nor Jerry does any work.

Q: A man is carrying a mass m on his head and walking on a flat surface with a constant velocity v.…

A: The problem is based on the concept of work done against gravity. W = (|F| cosθ) |d| .We know that…

Q: 6. A child does 350 J of work to lift a box from the ground up to his tree house at a steady speed.…

A:

Q: 2. Which situation demonstrates a positive work done? Group of answer choices A basket being lifted.…

A: Case 1 Work is done by man against gravity When basket being lifting Case 2 No work done by boy…

Q: Work-Energy Theorem, implies that Work done by a variable force, F(x) on an object as it moves is…

A: Introduction: The work done is define as the dot product and applied force and displacement of the…

Q: 1. How much work is done by a person pushing a box with a constant force of 300 N: a. if it is too…

A:

Q: A 80-N constant force exerted on a 15-kg object for 12 seconds. The initial velocity of an object is…

A: ANS(a) Given :                Force = F = 80 N              mass = m =15 kg                time = t…

Q: Block A (mA = 2 kg) is initially at rest on top of block B. Atlas moves block B from rest by…

A:

Q: A 1000 kg car moves with a speed of 20 m/s. Suddenly the driver speeds up to 25 m/s, what is the…

A: According to the work-energy theorem, the work done on the car must be equal to the change in…

Q: How much work (in J) must be done to lift a stack of bricks, which has a mass of 50 kg, from the…

A: Given data The given mass is m=50 kg The height is h=8 m The accleration due to gravity is g=10 m/s2…

Q: How much work is needed to change the speed of a 2375 kg sport utility vehicle from 15.0 m/s to 60…

A: Given data:  Mass (m) = 2375 kg Initial velocity (Vi ) = 15.0 m/s Final velocity (Vf) = 60 m/s…

Q: 37. The work-energy theorem states that the change in the kinetic energy of an object is equal to…

A: Let the mass of an object = m Let the initial velocity of an object = u Let the final velocity of…

Q: A 100 kg crate slides 10.0 m down a 40 degree incline. The coefficient of friction is 0.20. What is…

A:

Q: A farmer shoves a 1.250-kg block from the bottom of a frictionless 30.0° inclined plane. She…

A: Given that mass of the block and inclination angle and also given the value of work. Then We have to…

Q: An elevator cable breaks when a 925 kg elevator is 26.5 m above the top of a huge spring (k =…

A: Given data: The mass of the elevator, m=925 kg. The height of the elevator with respect to the top…

Q: A horizontal force of 400 N is applied to a 50-kg cart across a 10-m level surface. If the cart…

A: Given       Horizontal force=400N             Mass of cart=50kg          Displacement=10m…

Q: As I carry a box up a flight of stairs, am I doing positive work or negative work on the box?…

A: When you carry a box up a flight of stairs, the force is in the direction of the displacement. Hence…

Q: An accelerating object of mass m=18 kg is fired with an initial speed v=9 m/s at a starting point.…

A:

Q: 13. Through what vertical distance does the block rise as it slides up to its highest point on the…

A: Given: Mass,m=500g=500×10-3kgAcceleration due to gravity,g=9.8m/s2Coefficient of kinetic…

Q: A 1000 kg car moves with a speed of 20 m/s. Suddenly the driver slows to 7 m/s, what is the work…

A: The mass of the car, m is 1000 kg. The initial speed of the car, u is 20 m/s. The final speed of the…

Q: Q05. If an object goes to the left, but one of the forces pushes it to the right, opposing its…

A:

Q: juan(m=55kg) is riding his scooter(m=3kg), starting from rest he applies a net force to 20N for a…

A:

Q: A 5.5 kg bird is flying 12 m above the ground. Potential energy of bird is calculated to be ?  use g…

A: Given, mass of the bird m = 5.5 Kg Height on which bird flying h = 12 m We know the expression for…

Q: An accelerating object of mass m=17 kg is fired with an initial speed v-8 m/s at a starting point.…

A:

Q: A particle experiences a variable force F= (2+2x+ x^2)N that acts in the x direction. The work done…

A:

Q: Which of these is an example of no work being done?   a. a child pushes a toy car across a flat…

A: Work done is the energy transferred when a force is displaced by a distance.

Q: me left 1:T A box weighs 49 N is pulled 6.0 m up along a 37° inclined plane. What is the work done…

A: Write the given values of the problem- Weight=49 N Angle=370 Length=6 m

Q: An accelerating object of mass m=12 kg is fired with an initial speed v;-5 m/s at a starting point.…

A: Given: The mass of the body is 12 kg. The initial velocity of the object is 5 m/s. The final kinetic…

Q: . Which of the following statements represent example of situation showing work? a. A child applies…

A: Work is said to be done when an object is displaced on applying external force . So ,for work…

Q: Dr. B is bouncing a 0.245 kg playground ball in his office one day. He drops the ball from a height…

A:

Q: 3. A 10-N force is applied to push a block across a frictional surface at constant speed for a…

A: Work done is defined as W = Ftotal × d Ftotal =  Total force acting d = displacement

Q: Find the magnitude of the net torque (in N.m) on the wheel shown in the Figure about the axle…

A:

Q: 1. What is the work done by GRAVITY if a 50kg block is pushed along a 4m horizontal track? a. 1960…

A: