A 1500 kg car begins sliding down a 5.0 inclined roadwith a speed of 30 km/h. The engine is turned off, and the onlyforces acting on the car are a net frictional force from the road andthe gravitational force. After the car has traveled 50 m along theroad, its speed is 40 km/h. (a) How much is the mechanical energyof the car reduced because of the net frictional force? (b) What isthe magnitude of that net frictional force?

Q: A 36.0-kg crate, starting from rest, is pulled across a floorwith a constant horizontal force of 225…

A: According to the work-energy theorem, the changing in kinetic energy of the crate must be equal to…

Q: If the speed of a car is increased by 70%, by what factor will its minimum braking distance be…

A: Consider the speed of the car in the first case is v.

Q: A mass of 3.00 kg is initially at rest upon a frictionless incline with a 30.8 degree angle of…

A:

Q: In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 4.0…

A: The free body diagram of the system is shown below.

Q: A piano mover is pushing a 240-kg piano a distance d=5.0 m with a force parallel to the floor of…

A: The given data are: m=240 kgd=5 mFp=480 Nμ=0.18u=m/s Here, m denotes the mass, d denotes the…

Q: An object with a mass of 10 kg is initially at rest at the top of a frictionless inclined plane that…

A: Write the given values of the problem- Mass(m) m=10 kg Height(h) h=8 sin(300) Coefficient of the…

Q: A block slides down a frictionless inclined ramp and experiences no significant air resistance. If…

A: Please see the answer below

Q: A sled starts up a 2727 degree incline with a speed of 3.13.1 m/s. The coefficient of kinetic…

A:

Q: A skier traveling 13.2m/s reaches the foot of a steady upward 19.70975 incline and glides 20.29696m…

A:

Q: Calculate the speed of a 2.1 x 10^3-kg car at the bottom of a driveway if it starts from rest at the…

A: The mass of the car is M=2.1×103 kg The length of the driveway is D=5.0 m The angle of inclination…

Q: A box is given a push so that it slides across the floor.   How far will it go, given that the…

A:

Q: What power on the cables does it require to lift a 250-kg elevator cab and 4 passengers each with a…

A:

Q: A block of mass M = 3.80 kg is launched with a speed of v = 5.98 m/s at the bottom of a sufficiently…

A: mass, m = 3.8 kg  velocity initial, v = 5.98 m/s  Angle, A = 14.8 degree  kinetic friction = 0.371

Q: A 30.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of…

A:

Q: der the action of a force, a 2 kg body moves such that its t3 where x 3 position x as a function of…

A: Work done is defined as the product of magnitude of displacement d and the component of force in the…

Q: A cable exerts a constant upward tension of magnitude1.25 x 104 N on a 1.00 x 103-kg elevator as it…

A: Given,The magnitude of upward tension, T=12500NMass of the elevator, m=1000kgThe distance the…

Q: As shown in the figure below, a box of mass m = 31.0 kg is sliding along a horizontal frictionless…

A:

Q: A person uses a motorized bicycle to climb a road inclined 30 ° above the horizontal with constant…

A: Mass of the person +bicycle M=102 kg Angle of inclination θ=300 Displacement of the person d=86 m…

Q: A vehicle with a mass of 2754.49 kg is being tested for its engine consumption by measuring the…

A: Given data: The mass of the vehicle is m=2754.49 kg. The coefficient of kinetic friction of the…

Q: An m=60 kg diver jumps off a diving board h=3 m above the water that acts like an ideal spring with…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume…

A: Energy can neither be created nor destroyed. It is simply converted from one form to another and the…

Q: The world record for pole vaulting is 6.15 m. If the pole vaulter’s gravitational potential is 4942…

A: Given Potential energy= 4942 J Height = 6.15 m We have to calculate the mass

Q: 300 J of work are required to fully drive a stake into the ground. If the average resistive force on…

A: Given information: The work done to move the stake on to the ground (W) = 300 J The resistive force…

Q: a mother and her child are skiing together, and the mother is holding the end of a rope tied to the…

A:

Q: A 5.0-kg box rests on a horizontal surface. The coefficient of kinetic friction between the box and…

A:

Q: An object with a mass of 10 kg is initially at rest at the top of a frictionless inclined plane that…

A:

Q: A 445 N boy swings on a 3.0 m long swing. If his horizontal speed at the lowest point is 3.0 m/s,…

A: Given  Weight of boy W=445N length of rope l=3m Speed at lowest point v=3m/s

Q: Which force(s) perform non-zero work between any two different points during the motion of a simple…

A: We are allowed to answer only the first question. For solutions to other questions, please re-post…

Q: A toy gun uses a spring to project a 5.3 - g soft rubbersphere horizontally. The spring constant is…

A: Let Wf  be the work done by the friction force in the opposite direction, Ps be the elastic…

Q: 300 | of work are required to fully drive a stake into the ground. If the average resistive force on…

A: Given, Work required to fully drive a stake, W = 300 JResistive force on the stake by the ground, fd…

Q: A 5.0 kg mass drops vertically from a height 4.0 m on the plate on top of a spring bala whose force…

A:

Q: If a constant force F is applied to an object, and the resulting movement of the objectis…

A: The work is done by an object when a force acts on it over a distance. The mathematical form of work…

Q: A horizontal force of 1.5 N acts on a 0.2kg mass to accelerate it along a horizontal path. How fast…

A:

Q: A 36-kg girl rides on the seat of a swing attached to two chains that are each 20 m long. If she is…

A:

Q: In the figure, a 4.00 kg block is sent sliding up a plane inclined at 0 = 39.0° while a horizontal…

A:

Q: A pushing force of 10 000 N is applied to the backside of a car at an angle of 25.0° above the…

A: Force F = 10000N Horizontal angle θ=25∘ Distance s =15 m Mass of the car m = 2250 Kg

Q: Starting from rest, a 92-kg firefighter slides down a fire pole. The average frictional force…

A: A 92 kg firefighter slides down a fire pole.and avarage friction force exerted on him by the pole…

Q: In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 3.0…

A: The given values are, vi=3.0 m/sθ=21.0°m=16 kgμk=0.20

Q: Find the net work done by friction on the body of a snake slithering in a complete circle of radius…

A: Given that, Radius = 1 m Coefficient of friction = 0.25 Weight = 54.0 N

Q: If a car (m = 1200 kg) generates 18 hp when traveling at a steady 90 km/h, what must be the combined…

A:

Q: How much time will it take for a 12.5-hp electric motor to lift an elevator weighing 1850 Ib by 3…

A: Given,

Q: While a roofer is working on a roof that slants at 36.0 ∘∘ above the horizontal, he accidentally…

A: When the object is kept on an inclined plan, following forces act on it, 1. force due to gravitation…

Q: A mass of 2.0kgis projected with a speed of 5.5m/sup a plane inclined 20 degrees with the…

A: