
1 2 3 00 00 Diagram is snapshot before collision. Mass of each boxcar = 10,000...
Refer to the illustration of three boxcars,
above.
65. The Boxcar 1 moves to the right at speed v1 = 5.4
m/s. Boxcars 2 and 3 are initially at rest. The total momentum
before interaction is
A. 63000 kg m/s
B. 198450 kg m2/s2
C. 189000 kg m/s
D. 54000 kg m/s
66. The Boxcar 1 moves to the right at speed v1 = 5.4
m/s. After collision, the three boxcars latch together and move off
together as one mass,...
Refer to the illustration of three boxcars,
above.
67. Our Boxcar 1 moves to the right at speed v1 = 5.4
m/s. As part of the group of three boxcars, moving off at speed
vnew to the right, Boxcar 1 has slowed down. This means
that
A. rigidity force from the rail is vertically upward.
B. momentum was actually NOT conserved.
C. the third law interaction force on Boxcar 1 was leftward.
D. the first law of Sir Isaac Newton...
The Boxcar 1 moves to the right at speed v1 = 5.4
m/s. After collision, the three boxcars latch together and move off
together as one mass, with speed vnew to the right. The
new speed vnew is...
LE! 1 3 Diagram is snapshot before collision. Mass of each boxcar = 10,000 kg.
The Boxcar 1 moves to the right at speed v1 = 5.4
m/s. Boxcars 2 and 3 are initially at rest. The total momentum
before interaction is
LE! 1 3 Diagram is snapshot before collision. Mass of each boxcar = 10,000 kg.
2. A railroad boxcar rolls on a track at 3.10 m/s toward two identical coupled boxcars, which are rolling in the same direction as the first, but a speed of 1.60 m/s. The first reaches the second two and all couples together. The mass of each is 4.65 x 104kg. (a) Present the physical principle in mathematical form and use it to determine the speed of the three coupled cars after the first couples with the other two. (b) Determine...
An object with total mass mtotal = 16.2 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.7 kg moves up and to the left at an angle of θ1 = 23° above the –x axis with a speed of v1 = 25.3 m/s. A second piece with mass m2 = 5.1 kg moves down and to the right, an angle of θ2 = 28° to the right of the -y axis...
Block 1, of mass m1 = 1.10 kg , moves along a frictionless air track with speed v1 = 29.0 m/s . It collides with block 2, of mass m2 = 45.0 kg , which was initially at rest. The blocks stick together after the collision. (Figure 1) Find the magnitude pi of the total initial momentum of the two-block system. Find vf, the magnitude of the final velocity of the two-block system. What is the change ΔK=Kfinal−Kinitial in the...
Block 1, of mass m1 = 2.30 kg, moves along a frictionless air track with speed v1 = 31.0 m/s. It collides with block 2, of mass m2 = 13.0 kg, which was initially at rest. The blocks stick together after the collision. A) Find the magnitude pi of the total initial momentum of the two-block system. B) Find vf, the magnitude of the final velocity of the two-block system C)What is the change ΔK=Kfinal−Kinitial in the two-block system's kinetic...
1. Two asteroids collide head-on and stick together. Before the
collision, asteroid A (mass 1,000 kg) moved at 100 m/s and asteroid
B (mass 2,000 kg) moved at 80 m/s in the opposite direction. Use
momentum conservation (make a complete Momentum chart) to find the
velocity of the asteroids after the collision.
2. Two asteroids identical to those in (1) collide at right
angles and stick together. "Collide at right angles" means that
their initial velocities were perpendicular to each...