A 45.0 - kg girl is standing on a 150. - kg plank. The plank, originallyat rest, is free to slide on a frozen lake, which is a flat, frictionlesssurface. The girl begins to walk along the plank at aconstant velocity of 1.50 m/s to the right relative to the plank.(a) What is her velocity relative to the surface of the ice? (b)What is the velocity of the plank relative to the surface of the ice?

Q: Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly…

A: Let there be positive x-axis along right direction . And the positive y-axis along up direction.…

Q: Two objects, A and B, both with a mass of 2 kg, collide. The velocities before the collision are ViA…

A:

Q: Joel who is 72.5 kg moves horizontally with a velocity of 3 m/s, jumps off the end of a pier into a…

A: we apply conservation of momentum of system comprising person + boat before and after jumping into…

Q: Two masses (m1 = 80 kg; m2 = 50 kg) collide as shown. Find the final velocities if the collision is…

A: Given: mA=80 kgmB=50 kgvAi=6 m/svBi=-4 m/s Note: Here, consider positive velocity in the positive…

Q: A device called a ballistic pendulum is used to calculate the muzzle velocity of a bullet. What will…

A: Given info: mass of bullet, m =20.5 g = 0.0205 kg mass of block, M = 750 g = 0.75 kg Length of…

Q: A 20.0-kg toboggan with 70.0-kg driver is sliding down a frictionless chute directed 30.0° below the…

A: Given: ..................................(Eq1) Free body Diagram... So,…

Q: The recoil of a shotgun can be significant. Suppose a 3.3-kgshotgun is held tightly by an arm and…

A: Mass of the shotgun = 3.3 kg Mass of arm and shoulder = 15 kg Total mass of the combined shotgun and…

Q: An 81 kg fisherman jumps from a dock into a 134 kg rowboat at rest on the West side of the dock. If…

A:

Q: An object of mass 3.00 kg, moving with an initial velocity of 4.97 i m/s, collides with and sticks…

A:

Q: Object A of mass M has an original velocity of 7.20 m/s in the +x-direction toward a stationary…

A: The answer is below

Q: The center of mass of a system of particles has a constant velocity if?

A: The velocity and acceleration of a center of mass can be expressed as.

Q: Three skydivers are plummeting earthward. They are initially holding onto each other, but then push…

A: Since initially, the skydivers plummet earthward, that is, the motion is vertically downward, their…

Q: . A hockey puck of mass 0.45 kg is shot west at 2.90 m/s strikes a second puck, initially at rest,…

A: We know that we have a hockey puck of mass m= 0.45 kg and shot west at 2.90 m/s strikes a second…

Q: • A 54-kg person walks due north with a speed of 1.2 m>s, andher 6.9-kg dog runs directly toward…

A: The mass of the man M =54 kg The mass of the dog m=6.9 kg Take due north as positive direction and…

Q: A boy cruising across a smooth, level sidewalk is approaching a pipe guard-rail. It seems like a…

A:

Q: In a football game, 123.5 kg linebacker moving west at 0.95 m/s tackles an 86.4 kg running back…

A: Given data: The mass of linebacker player is m1=123.5 kg. The mass of running back player is…

Q: There is a 1D elastic collision between a box of 5 kg and a ball of 5 kg. Before the collision, the…

A: Conservation of momentum: It states that “the total momentum of a system remains conserved or…

Q: A tennis ball of mass 57.0 g is heldjust above a basketball of mass 590 g. Withtheir centers…

A: Given data:Mass of the tennis ball, m = 57.0 g = 0.057 kgMass of the basketball, M = 590 g = 0.59…

Q: Two objects with masses m = 0.5 kg and m2 = 0.2 kg are located on a horizontal frictionless path,…

A:

Q: During a spacewalk, a 118 kg astronaut (including her spacesuit) is at rest and holding a 3.5 kg…

A: Consider the mass of astronaut be m1, the mass of the wrench be m2, the initial speed of the…

Q: 4. A ball of mass M1 = 0.250 kg and velocity Vor = +5.00 m/s collides head-on with a ball of mass M2…

A: According to the question  mass of first ball, m1 = 0.25 Kg speed of first ball, v1 =5 m/s mass of…

Q: Two carts of mass 0.65 kg and 1.50 kg are moving on a level air track with velocities -1.60 m/s and…

A: Given, mass of the cart, m1 = 0.65 kgm2 = 1.50 kgv1 = -1.60 msv2 = +0.85 ms

Q: To get off a frozen, frictionless lake, a 65.0-kg person takes off a 0.150-kg shoe and throws it…

A:

Q: A ball of mass m1 = 0.5 kg, moving along the x-axis with a speed of 5 m/s, has an elastic head-on…

A: Mass of the first ball is m1 = 0.5 kg Mass of the second ball is m2 = 1 kg Initial speed of the…

Q: . Two metal spheres, suspended by vertical cords, initially just touch. Sphere 1, with mass 30g is…

A: (given) Mass (m1) of sphere 1 = 30 g                                     = 0.03 kg…

Q: A 2500 kg cannon, initially at rest, fires an 80 kg shell horizontally, with a speed of 600 m/s.…

A: Given: Mass of cannon (mc) = 2500 kg Recoil velocity of the cannon = vc m/s Mass of the cannonball…

Q: Consider an 1D elastic collision where particle m1 hits stationary particle m2 lying on a friction-…

A: Given:  1D elastic collision where particle m1 hits stationary particle m2 lying on a friction…

Q: A 0.145-kg baseball is dropped from rest. If the magnitude of thebaseball’s momentum is 1.55 kg #…

A:

Q: A 0.030-kg bullet is fired vertically at 200 m/s into a 0.15- kg baseball that is initially at rest.…

A:

Q: An internal explosion breaks an object into two fragments. One fragment is 2.35 kg moving 30° north…

A: Mass of one fragment: m1=2.35 [kg] Velocity of fragment: v1=3.5 [m/s] Mass of other fragment:…

Q: Vis Consider the collision of a moving puck with a second, initially stationary puck, as shown in…

A: Given : m1 = 0.50 kg; m2 = 0.60 kg;             v1 = 1.5 m/s; v1f = 0.5 m/s and θ1 = 50°

Q: A block of mass m = 8 40 kg. moving on a horizontal frictionless surface with a speed 4.20 m/s,…

A: We need to calculate the average force on 8.40 kg block, while the two blocks are in contact.

Q: Three blocks of masses m1=1.00 kg, m2=2.00 kg, and m3=3.00 kg are set at rest on a level air track…

A: The initial speed of the first mass is, The initial speed of the second mass is, The initial speed…

Q: A 20.0-kg toboggan with 61.2-kg driver is sliding down a frictionless chute directed 0 = 24.8° below…

A: Given that : Mass of Toboggan = 20 kg     and    Mass of driver = 61.2 kg Total Mass ( MTD ) = 81.2…

Q: An arrow of mass 0.05 kg collided with a static apple of mass 0.1 kg and stabilized it and moved at…

A:

Q: "A railroad car, of mass 200 kg, rolls with negligible friction on a horizontal track with a speed…

A:

Q: 4. A ball of mass M1 = 0.250 kg and velocity Voi =+5.00 m/s collides head-on with a ball of mass M2…

A: As per our guidelines, we are supposed to answer only first one question in case of multiple…

Q: An 500 kg cannon and a 20 kg cannonball are both initially at rest. If the cannon fires the nnonball…

A:

Q: Base from the figure below, what is the final velocity if the collision is perfectly inelastic? |M =…

A:

Q: In a football game, 100.5 kg linebacker moving west at 0.67 m/s tackles an 85.0 kg running back…

A:

Q: A boy cruising across a smooth, level sidewalk is approaching a pipe guard-rail. It seems like a…

A:

Q: An elastic collision occurs in one dimension, in which a 10 kg block traveling at 5 m/s collides…

A:

Q: If an 800 kg sports car slows to 13.0 m/s to check out an scene and the 1200 kg pick-up truck behind…

A: Let,m1=800kgv1=13m/sm2=1200kgv2=25m/sLet V be the velocity after a rear end collision.

Q: A 0.30 kg softball has a velocity of 15 m/s at an angle of 35 below the horizontal just before…

A: Given:  mass of the ball, m = 0.3 kg  initial velocity, u = 15 m/s at an angle 35 degree below…