Junry pulls his wife, who’s mass is 50 kg and who is sitting on a swing with rope of length 5 m, backward until the rope make an angle of 50° with respect to the vertical. He then releases his wife from rest. Determine the speed of his wife when the rope makes an angle of 20° with respect to the vertical? a. 5.30 m/s c. 5.60 m/s b. 5.50 m/s d. 5.40 m/s

Q: Sam, whose mass is 77 kg , takes off across level snow on his jet-powered skis. The skis have a…

A: mass = 77 kg thrust = 150 N coefficient of friction = 0.1 t = 9 sec

Q: Starting from rest, a 31.4 kg child rides a 8.75 kg sled down a frictionless ski slope. At the…

A: At the top of the hill the speed is zero. At, the bottom of the hill, the speed is 6 m/s.   The…

Q: A 1500 kg car is approaching the hill shown at 10 m/s when it suddenly runs out of gas.a. Can the…

A:

Q: In the Marvel comic series X-Men, Colossus would sometimes throw Wolverine toward an enemy in what…

A:

Q: 26. An 80.0-kg skydiver jumps out of a balloon at an alti- tude of 1 000 m and opens his parachute…

A: (a)Without parachute, the acceleration is,

Q: A 2.0 kg object is moving to the right with a speed of 1.0 m/s when it experiences the force shown…

A: Given:Mass of the object = 2 kgInitial speed of the object = 1 m/s

Q: You kick a ball vertically from the ground and give it an initial velocity of = 30 m/s. Vi Find the…

A:

Q: In this problem we calculate the work required for a pitcher to throw a 90-mi/h fastball by first…

A: Let mass of an object = m Let the initial velocity = voLet the final velocity = v1Let the original…

Q: A skier is sliding downhill at 7 m/s when she reaches an icy patch on which her skis move freely…

A: Let v be the final velocity at the bottom of the icy patch of the skier. The given initial velocity…

Q: A stunt performer swings on a 30.5 m long vine initially inclined at an angle of 35.0° with the…

A: Consider the diagram for the stunt performer on the swing as follows.

Q: In the Marvel comic series X-Men, Colossus would sometimes throw Wolverine toward an enemy in what…

A: Given: Hight of wolverine when thrown h=2.17 m The angle of the throw: θ=33.2° Initial release…

Q: On a 119 meter high roller coaster is a 75 kg car at rest. Assuming there is no friction, what will…

A: Given data:  Height (h) = 119 meter Mass of car (m) = 75 kg Acceleration due to gravity (g) = 9.8…

Q: A 1,000-W motor powers a hoist used to lift cars at a service station. (a) How much time would it…

A: Power P=1000W Mass of the car m =1100 kg Height h= 3m

Q: Chapter 08, Problem 022 Your answer is partially correct. Try again. A 54 kg skier starts from rest…

A: Given data: Mass m = 54 kg Height H= 23m Angle θ=27°

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

A:

Q: A toy cannon uses a spring to project a 5.22-g soft rubber ball. The spring is originally compressed…

A: mass = 5.22 g original compression (d) = 4.93 cm k = 7.98 N/m d1 = 14.4 cm f = - 0.0316 N

Q: 2) Swimmers at a water park have a choice of two frictionless water slides as shown in the figure.…

A: Given : h1 = h2 = h

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 S9 kg skier starts from rest at height H- 22 m above the end of a ski-jump ramp (see the figure).…

A: Dear student When there is no external forces acting on the system. The energy remains conserved.…

Q: A ski jumper starts from rest 47.5 m above the ground on a frictionless track and flies off the…

A: Let the initial and final velocity of the ski jumper are v1 and v2. Let the mass of the ski jumper…

Q: 2) Swimmers at a water park have a choice of two frictionless water slides as shown in the figure.…

A:

Q: 235 kg roller coaster is at the top of a hill with a velocity of 5.60 m/s from a height of 100.0 m…

A: According to conservation of energy Total energy of isolated system remains constant.

Q: A 59 kg skier starts from rest at height H = 20 m above the end of a ski-jump ramp (see the figure).…

A: To solve the question, we have to find the speed of the jumper at the end of the ramp, and then…

Q: A Given: The 800 kg roller B 7.5 m coaster car is 20 m released from rest at A. Find: The minimum…

A: Forces acting on the roller coaster car are normal force and gravitational force. Normal force will…

Q: is the final speed?

A:

Q: e Marvel comic series X-Men, Colossus would sometimes throw Wolverine toward an enemy in what was…

A: Motion of projectile can be divided into x component and y component. x component of initial…

Q: I A baseball pitcher can throw a ball with a speed of 40 m/s. He is in the back of a pickup truck…

A: Vball=40 m/s Vfloats=10 m/s Vtruck=?

Q: The man stands 18 m from the wall and throws a ball at it with the speed of 15 m/s as shown in…

A: Given:distance of the man from the wall, d = 18 minitial speed, u = 15 m/sangle of projection, θ =…

Q: The juggling skateboarder is back outside my office! He starts with a speed of of 3.0 m/s at a…

A: This problem can be solved using the conservation of energy and using kinematic as well. We will…

Q: 6. A crazy, young boy on a sled is able to get up to an incredible speed of 22.5 m/s (yes, he is…

A:

Q: 13. A roller coaster at the Six Flags QIC Great America amusement park in Gurnee, Illinois,…

A: Let v be the velocity of the roller coaster at the top of the teardrop, ac be the centripetal…

Q: In the Marvel comic series X-Men, Colossus would sometimes throw Wolverine toward an enemy in what…

A: a. take upward direction as y direction and choose the ground position to be 0 m. take right…

Q: A ski jumper starts from rest 52.5 m above the ground on a frictionless track and flies off the…

A: Given: A ski jumper starts from rest 52.5 m above the ground on a friction less track and flies off…

Q: A B 7.5 m The 800-kg roller coaster car is released from rest at A. h 20 m Find the minimum height,…

A:

Q: 1. Choose the correct answer from the option list below to answer the following parts. a) A ball is…

A: Aim: To choose the correct answer from the option list to answer the given parts.   Working Theory:…

Q: The tension in each rope of a swing at the lowest point is 412 N when a  36.0-kg girl is swinging.…

A:

Q: 2. A 50.0 kg roller coaster car is launched, from ground level, at 20.0 m/s. How fast will it be…

A: Given Mass or roller = m = 50.0 kg Speed at ground level = u = 20.0 m/s Height of the top from…

Q: A 1.0-kg ball at the end of a 2.0-m string swings in a vertical plane. At its lowest point the ball…

A: (a) Apply principle of conservation of energy…

Q: At a pool, a 3.26 kg life ring is thrown by a lifeguard to a struggling swimmer. The lifeguard stand…

A: Given: ring's mass, m=3.26 kg stand's height, hs=1.75 m Velocity, u=8.23 m/s

Q: Tarzan grabs a vine hanging vertically from a tall tree when he is running at 9.0 m/s. (a) How high…

A: (a) According to the conservation of energy, mgh=12mv2gh=12v2h=v22g Substitute the values, to find…

Q: A stunt performer swings on a 34.0 m long rope initially inclined at an angle of 40.0° with the…

A: a) Using conservation of energy change in potential energy = change in kinetic energy mgl(1-cosθ) =…

Q: 3. An object of mass, m = 56 kg starts to slide from rest on a curved ramp from height, H = 37 m…

A: The given data are listed below with suitable variables. Here, m denotes the object’s mass, H…

Q: Two blocks are connected by a light string that passes over a frictionless pulley as in the figure…

A: given m1=6.2 kg m2=3.8 kg h=3m Here we can apply conservation of mechanical energy.

Q: A toy cannon uses a spring to project a 5.32-g soft rubber ball. The spring is originally compressed…

A: The ball moves from point A and leaves the barrel of the cannon at point C is shown below .

Q: A 51 kg skier starts from rest at height H - 26 m above the end of a ski-jump ramp (see the figure).…

A: mass = 51 kg H = 26 m Using conservation of energy to find the velocity of skier at the end of the…