A boy of mass m = 40 kg is standing on a stationary long plank of mass M= 260 kg floating on still water -1 in a lake. He starts running with a velocity v= 6 ms relative to the plank. Find the velocity of the boy rela- tive to a stationary observer on the bank of the lake.

Q: A 20 kg particle has a velocity (15i - 13j) m/s, and a 30 kg particle has a velocity (12i - 3j) m/s…

A: Given data m1=20 kgV1=15 i-13 j m/sm2=30 kgV2=12 i-3 j m/s

Q: Space probes may be separated from their launchers by exploding bolts. (They bolt away from one…

A:

Q: Bryce, a mouse lover, keeps his four pet mice in a roomy cage, where they spend much of their spare…

A: Masses of four pets are , ,  and The x and y-components of velocities areFind:The x and y-components…

Q: While in Earth's orbit, an 80-kg astronaut carrying a 20-kg tool kit is initially drifting toward a…

A: Initially the astronaut and tool kit carried by her is moving toward the shuttle with speed 2 m/s.…

Q: What is the momentum (as a function of time) of a 5.0-kg particle moving with a velocity v →(t) =…

A: Given, Momentum of a particle is 5.0 kg Velocity is, The net force acting on this particle?

Q: Two asteroids of equal mass in the asteroid belt between Mars and Jupiter collide with a glancing…

A: Resolve the velocity after the collision as shown below:

Q: A 1400 kg car at rest at a stop sign is rear-ended by an 1860 kg truck traveling at a speed of 20.3…

A:

Q: In transmission electron microscopy (TEM), electrons are accelerated to have kinetic energies of…

A: Part (a) Given: The kinetic energy of electron is K=342.0 keV, The formula to calculate the mass…

Q: A mass mA = 50 kg moving with a velocity vA = (5.0i + 2.0j – 4.0k) m/s, collides with mass mB = 5.0…

A:

Q: An unstable nucleus of mass 1.7 x 10-26 kg, initially atrest at the origin of a coordinate system,…

A: Write the equation of conservation of momentum.

Q: An automobile traveling at 60 km/h (with respect to the ground) bumps into the rear of another…

A: Given: The speed of automobile 1 is 60 kmh. The mass of automobile 1 is 1200 kg. The speed of…

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

A:

Q: (a) At what speed would a 2.00×104-kg airplane have to fly to have a momentum of 1.60×109kg·m/s (the…

A: Given: mass of airplane, m = 2 x 104 kg  (a) momentum, p  = 1.6 x 109 kg m/s  (b) speed,v = 60 m/s

Q: A rocket is at rest in space relative to the Earth and has a mass of M = 2.55 × 10^5 kg when it is…

A:

Q: A block of mass m= 2 kg is moving with speed 7ms^-1. It collides inelastically with a stationary…

A: Mass, m = 2 kgSpeed, u = 7 m/sMass, M = ? Speed, v = 0Combined speed, V = 5 m/s

Q: Two asteroids of equal mass in the asteroid belt between Mars and Jupiter collide with a glancing…

A:

Q: (a) At what speed would a 2.00×1044-kg airplane have to fly to have a momentum of 1.60×109kg · m/s…

A: Using the equation for momentum, P=mvv=Pm=1.60×109 kgm/s2.00×104 kg=0.8×105 m/s

Q: Space probes may be separated from their launchers by exploding bolts. (They bolt away from one…

A: Kinetic Energy=7000J m1= mass of satellite m2=mass of launcher v1=velocity of satellite after…

Q: Can you help me with this physics problem? A 0.35 kg projectile is moving in the negative y…

A:

Q: Two asteroids of equal mass in the asteroid belt between Mars and Jupiter collide with a glancing…

A:

Q: An astronaut floating at rest in space has run out of fuel in her jetpack. She realizes that…

A:

Q: The collision alarm sounds, and the commander detonates a charge, releasing one of the modules at a…

A: As the forces are internal , the net external force on the station is zero. Therefore momentum is…

Q: A mass ma 3.0 kg, moving with velocity V=(4.01 + 8.01 - 2.0k)m/s, collides with mass ms = 4.0 kg,…

A:

Q: If a projectile mass of 1.0 kg moving at 19.0 m/s collides with a motionless target mass of 15.0 kg…

A:

Q: A thin empty frame is hung along side A (see figure). Side A is 1.19 m long and side B is 0.957 m…

A: When a body of mass mmoving in straight line with velocity v collides to the end of long rod like…

Q: of 5.00 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg.   a. Calculate the final velocity (after…

A: Given data,  m1= 5.00 ✕ 103 kg, m2= 7.5×103 kg u1= 0m/s u2= 0.2m/s v= final velocity after collision…

Q: A 1.0 ⋅ 104 kg spacecraft is traveling through space with a speed of 1200 m/s relative to Earth. A…

A: Given data The mass is m=1.0×104 kg The speed is v=1200 m/s The time for the motion is t=2 min The…

Q: Two manned satellites are approaching one another at a relative speed of 0.235 m/s, intending to…

A:

Q: An object  is traveling in the negitve x-direction with 7.87 kg m/s of momentum and 36.3 J of…

A:

Q: A particle A of mass m with a factor of y of 2 makes an inelastic collision with a particle B of…

A: Given: m1=m m2=4m γ=2 v2=0