Question

In outer space rock 1, with mass 3 kg and velocity < 3900, -3200, 2600 >...

In outer space rock 1, with mass 3 kg and velocity < 3900, -3200, 2600 > m/s, struck rock 2, which was at rest. After the collision, rock 1's velocity is < 3400, -2400, 3000> m/s. What is the final momentum of rock 2?
2f =   kg · m/s
Before the collision, what was the kinetic energy of rock 1?
K1i =   
Before the collision, what was the kinetic energy of rock 2?
K2i =  J
After the collision, what is the kinetic energy of rock 1?
K1f =  J
Suppose the collision was elastic (that is, no change in kinetic energy and therefore no change in thermal or other internal energy of the rocks). In that case, after the collision, what is the kinetic energy of rock 2?
K2f =  J
On the other hand, suppose that in the collision some of the kinetic energy is converted into thermal energy of the two rocks, where Ethermal,1 + Ethermal,2 = 4.42 ⨯ 106J. What is the final kinetic energy of rock 2?
K2f =  J
In this case (some of the kinetic energy being converted to thermal energy), what was the transfer of energy Q (microscopic work) from the surroundings into the two-rock system during the collision? (Remember that Q represents energy transfer due to a temperature difference between a system and its surroundings.)
Q =  J

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In outer space a rock with mass 9 kg, and velocity <3700, -3000, 3000> m/s, struck...
In outer space a rock with mass 9 kg, and velocity <3700, -3000, 3000> m/s, struck a rock with mass 14 kg and velocity <200, -260, 180> m/s. After the collision, the 9 kg rock's velocity is <3300, -2500, 3500> m/s. What is the final velocity of the 14 kg rock? What is the change in the internal energy of the rocks?
Object A has mass mA = 8 kg and initial momentum A,i = < 19, -5,...
Object A has mass mA = 8 kg and initial momentum A,i = < 19, -5, 0 > kg · m/s, just before it strikes object B, which has mass mB = 11 kg. Just before the collision object B has initial momentum B,i = < 6, 6, 0 > kg · m/s. Consider a system consisting of both objects A and B. What is the total initial momentum of this system, just before the collision? sys,i = kg ·...
Object A has mass mA = 7 kg and initial momentum A,i = < 22, -6,...
Object A has mass mA = 7 kg and initial momentum A,i = < 22, -6, 0 > kg · m/s, just before it strikes object B, which has mass mB =  10 kg. Just before the collision object B has initial momentum B,i = < 2, 7, 0 > kg · m/s. Consider a system consisting of both objects A and B. What is the total initial momentum of this system, just before the collision? sys,i =   <24,1,0>    kg ·...
Cart 1, with m1= 5.8 kg, is moving on a frictionless linear air track at an...
Cart 1, with m1= 5.8 kg, is moving on a frictionless linear air track at an initial speed of 1.8 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 0.7 m/s. 1) The horizontal component of the momentum is conserved for cart 1. cart 2. the system of cart 1 and cart 2. Momentum is not conserved for any of these...
A ball with mass of 0.025 kg is thrown horizontally with velocity of 1.5 m/s toward...
A ball with mass of 0.025 kg is thrown horizontally with velocity of 1.5 m/s toward a wall in positive X direction. It collides with the wall, then bounces back to the left with velocity of 1.0 m. The Collison takes 0.015s. What is the total initial momentum? b) What is the total final momentum? c)What is change in momentum? d)What is the impulse? e) What is the average force acting on the wall by the ball during the collision?...
An Arrow (0.5 kg) travels with velocity 50 m/s to the right when it pierces an...
An Arrow (0.5 kg) travels with velocity 50 m/s to the right when it pierces an apple (2 kg) which is initially at rest. After the collision, the arrow and the apple are stuck together. Assume that no external forces are present and therefore the momentum for the system is conserved. What is the final velocity (in m/s) of apple and arrow after the collision? 10.0 m/s Computer's answer now shown above. You are correct. Your receipt no. is 164-9296...
1. A bottle of mass 0.5 kg is given an initial velocity of 2.3 m/s on...
1. A bottle of mass 0.5 kg is given an initial velocity of 2.3 m/s on a rough, horizontal surface. Draw a diagram showing all of the forces on the bottle as it moves across the surface. The bottle comes to rest after travelling a distance of 1.3 m. Calculate the time taken to come to rest, the deceleration and the friction force. 2. Block A has a mass of 4 kg and block B has a mass of 6...
A playground merry-go-round (of mass 123 kg and radius 1.90 m) is rotating with an angular...
A playground merry-go-round (of mass 123 kg and radius 1.90 m) is rotating with an angular velocity of 4.42 rad/s. A 23.7 kg child, initially at rest, suddenly jumps on the merry-go-round by grabbing onto its outer edge. How much kinetic energy (in J) is lost in this inelastic collision?
a 1.5 kg car (1) initially moving at 4.0 m/s to the right collides with a...
a 1.5 kg car (1) initially moving at 4.0 m/s to the right collides with a 2.0 kg car (2) initially moving at 2.0 m/s to the left. After the inelastic collision, car 1 is moving to the left at 1.2 m/s A) What is the velocity and direction of car 2 after the collision? B) What is the change in total kinetic energy and the percentage of initial kinetic energy remaining after the collision?
A car of mass 2500 kg collides with a truck of mass 4400 kg, and just...
A car of mass 2500 kg collides with a truck of mass 4400 kg, and just after the collision the car and truck slide along, stuck together, with no rotation. The car's velocity just before the collision was <31, 0, 0> m/s, and the truck's velocity just before the collision was <-13, 0, 24> m/s. b)what is the increase in internal energy of the car and truck (thermal energy and deformation)?