Question

1. A 8600kg boxcar is traveling at 12 m/s strikes a second boxcar of mass 7900 kg moving in the same direction. The two stick together and move off with a speed of 5.25 m/s. What was the original speed of the second boxcar? Explain your reasoning.

2. How much kinetic energy was lost in the collision?

Answer #1

A 2250 kg car traveling in the neagtive x direction at 8.5 m/s
strikes a second car of mass 2830 kg which is moving. The first
rebounds and moves off with a speed of 2.7 m/s. After the
collision, the second car moves in the negative x direction at 3.2
m/s. What was the original speed and direction of the second car?
Explain your reasoning.
Then how much kinetic energy was lost in the collision?

a 7500 kg railroad car traveling at a speed of 26.0 m/s strikes
a 5000kg car traveling at 10.0m/s. If the cars lock together as a
result of collision what is their common speed afterward? How much
of the initial kinetic energy is transferred to other forms of
energy?
Answer in 3 decimal places, and include full equation please

A 10,000-kg railroad car A, traveling at a speed of 24.0 m/s
strikes an identical car, B, at rest. If the cars lock together and
move at the same speed 12.0 m/s as a result of the collision, how
much of the initial kinetic energy is transformed to thermal or
other forms of energy? Round your answer to0 decimal places
A marble column of diameter 1.54 m and area 1.86 m2
supports a mass of 59 600 kg.Calculate the strain,...

Ball A has a mass of 100 kg; it is traveling to the right at 6.2
m/s. Ball B has a mass of 120 kg; it is traveling to the left at
4.7 m/s.(a) Assume an inelastic collision (they stick together).
Determine velocity at which the two move off together. Give speed
and direction. Pay attention to the + and – signs.(b) Assume they
have a perfectly elastic collision. Determine the speeds and
directions of each of the balls.

A mass of 5 kg is moving at 12 m/s in the +x direction and it
collides inelastically with a mass of 10 kg moving in the -x
direction. The collision takes places in 0.27 seconds and the
average force on the mass moving in the +x direction is 170 Newtons
in the -x direction. How much total kinetic energy is lost in the
collision in Joules? Answer is a positive number since I'm asking
how much is lost.
please...

A railroad car of mass 2.50 ✕ 104 kg moving at 3.40
m/s collides and couples with two coupled railroad cars, each of
the same mass as the single car and moving in the same direction at
1.20 m/s.
(a) What is the speed of the three coupled cars after the
collision?
(b) How much kinetic energy is lost in the collision?

A 2.0-N puck is traveling at 3.0 m/s. It strikes an 4.0-N puck,
which is moving at – 2.0 m/s before collision. The two pucks stick
together. Find their common final speed

A railroad car of mass 3.00 ? 104 kg moving at 3.00
m/s collides and couples with two coupled railroad cars, each of
the same mass as the single car and moving in the same direction at
1.20 m/s.
(a) What is the speed of the three coupled cars after the
collision?
_______ m/s
(b) How much kinetic energy is lost in the collision?
_______ J

A railroad car of mass 2.70 ✕ 104 kg moving at 3.50
m/s collides and couples with two coupled railroad cars, each of
the same mass as the single car and moving in the same direction at
1.20 m/s.
(a) What is the speed of the three coupled cars after the
collision?
m/s
(b) How much kinetic energy is lost in the collision?
J

A railroad car of mass 2.55 ✕ 104 kg moving at 3.25
m/s collides and couples with two coupled railroad cars, each of
the same mass as the single car and moving in the same direction at
1.20 m/s.
(a) What is the speed of the three coupled cars after the
collision?
m/s
(b) How much kinetic energy is lost in the collision?
J

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