A stationary car on a train track, m1 = 1500 kg, is struck by a train,...
A stationary car on a train track, m1 = 1500 kg, is struck by a train, m2 = 4500 kg. After the collision, the train and the car move together with a velocity of +2.3 m/s. Assume no external forces act during the collision.
a) What type of collision is this, and what physical quantity is conserved?
b) Calculate the initial velocity of the train in km/h.
c) Calculate the change in kinetic energy of the system.
Homework Answers
a) This is an inelastic collision and momentum is conserved in such collisions.
b) Let u be the initial velocity of the train.
Then,
4500*u = (1500+4500)*2.3
=> u = 3.07 m/s
c) Hence, the initial KE of the system is (1/2)m2u^2 + 0 = (1/2)*4500*3.07^2 = 21206 J
Final KE = (1/2)(4500+1500)(2.3)^2 = 15870 J
Hence change in KE = 21206 - 15870 = 5336J decrease
Add Answer to:
A stationary car on a train track, m1 = 1500 kg, is struck by a
train,...
Cart 1, with m1= 5.5 kg, is moving on a frictionless linear air track at an...
Cart 1, with m1= 5.5 kg, is moving on a frictionless linear air track at an initial speed of 1.7 m/s. It undergoes an elastic collision with an initially stationary cart 2, with m2, an unknown mass. After the collision, cart 1 continues in its original direction at 0.6 m/s. 1) The horizontal component of the momentum is conserved for A. cart 1. B. cart 2. C. the system of cart 1 and cart 2. D. Momentum is not conserved...
HELP ASAP 1500kg car moving at 16 m/s suddenly collides with a stationary car of mass...
HELP ASAP 1500kg car moving at 16 m/s suddenly collides with a
stationary car of mass 1000 kg
Problem3 1500-kg car moving at 16.00 m/s suddenly collides with a stationary car of mass 1000 kg a) What is the total initial momentum? b) If the two vehicles lock together, what is their combined velocity immediately after the collision? c)What is change in momentum? d)What is the impulse? e) What is the average force acting on the stationary car by the...
Block 1, of mass m1 = 1.10 kg , moves along a frictionless air track with...
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...
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...
A 7,500-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck...
A 7,500-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 7 m/s. Compute how much kinetic energy was "lost" in this inelastic collision.
A block of mass m1 = 1.10 kg moving at v1 = 1.20 m/s undergoes a...
A block of mass m1 = 1.10 kg moving at v1 = 1.20 m/s undergoes a completely inelastic collision with a stationary block of mass m2 = 0.900 kg . The blocks then move, stuck together, at speed v2. After a short time, the two-block system collides inelastically with a third block, of mass m3 = 2.40 kg , which is initially at rest. The three blocks then move, stuck together, with speed v3. Assume that the blocks slide without...
A block of mass m1 = 1.10 kg moving at v1 = 1.20 m/s undergoes a...
A block of mass m1 = 1.10 kg moving at v1 = 1.20 m/s undergoes a completely inelastic collision with a stationary block of mass m2 = 0.900 kg . The blocks then move, stuck together, at speed v2. After a short time, the two-block system collides inelastically with a third block, of mass m3 = 2.40 kg , which is initially at rest. The three blocks then move, stuck together, with speed v3. Assume that the blocks slide without...
Block 1, of mass m1 = 9.90 kg , moves along a frictionless air track with...
Block 1, of mass m1 = 9.90 kg , moves along a frictionless air track with speed v1 = 31.0 m/s . It collides with block 2, of mass m2 = 51.0 kg , which was initially at rest. The blocks stick together after the collision. Find the magnitude pi of the total initial momentum of the two-block system. Express your answer numerically. Find vf, the magnitude of the final velocity of the two-block system. Express your answer numerically. What...
Block 1, of mass m1 = 9.10 kg , moves along a frictionless air track with...
Block 1, of mass m1 = 9.10 kg , moves along a frictionless air
track with speed v1 = 27.0 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.
What is the change ΔK=Kfinal−Kinitial in the two-block system's
kinetic energy due to the collision?
Express your answer numerically in joules.
Before collision: m2 After collision:
A block of mass m1 = 1.70 kg moving at v1 = 2.00 m/sundergoes a completely...
A block of mass m1 = 1.70 kg moving at v1 = 2.00 m/sundergoes a completely inelastic collision with a stationary block of mass m2 = 0.300 kg . The blocks then move, stuck together, at speed v2. After a short time, the two-block system collides inelastically with a third block, of mass m3 = 2.40 kg , which is initially at rest. The three blocks then move, stuck together, with speed v3.(Figure 1) Assume that the blocks slide without...
HELP ASAP 1500kg car moving at 16 m/s suddenly collides with a
stationary car of mass 1000 kg
Problem3 1500-kg car moving at 16.00 m/s suddenly collides with a stationary car of mass 1000 kg a) What is the total initial momentum? b) If the two vehicles lock together, what is their combined velocity immediately after the collision? c)What is change in momentum? d)What is the impulse? e) What is the average force acting on the stationary car by the...
Block 1, of mass m1 = 9.10 kg , moves along a frictionless air
track with speed v1 = 27.0 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.
What is the change ΔK=Kfinal−Kinitial in the two-block system's
kinetic energy due to the collision?
Express your answer numerically in joules.
Before collision: m2 After collision:
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago