Physics

a 5 kg block with a speed of 3 m/s collides with a 10 kg block that has a speed of 2 m/s in the same direction. After the collision, the 10 kg block is observed to be traveling in the original direction with a speed of 2.5 m/s.
a) what is the speed of the 5 kg block immediately after the collision?
b) By how much does the total kinetic energy of the system of the 2 blocks change because of the collision?
c)suppose, instead, that the 10 kg block ends up with a speed of 4 m/s. what then is the change in total KE?

  1. 👍 0
  2. 👎 0
  3. 👁 51
asked by Sarah

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A pendulum with a bob of mass 30g is lifted to height of 5.00cm above its lowest point and allowed to fall so that collides elastically with a block of mass 20g that rests on a smooth horizontal floor. The block stops 5 seconds

    asked by Eryy on July 28, 2013
  2. physics

    Block A (mass = 3 kg), moving at +5 meters per second, collides with stationary block B (mass = 4 kg). Block A comes to a sudden stop, while block B starts moving. What will be the approximate final speed of block B?

    asked by Rachel on June 5, 2017
  3. physics

    A 3 kg block (block A) is released from rest at the top of a 20 m long frictionless ramp that is 5 m high. At the same time, an identical block (block B) is released next to the ramp so that it drops straight down the same 5 m.

    asked by Katelyn on November 2, 2016
  4. physics

    3 kg block (block A) is released from rest at the top of a 20 m long frictionless ramp that is 5 m high. At the same time, an identical block (block B) is released next to the ramp so that it drops straight down the same 5 m. Find

    asked by Katelyn on October 25, 2016
  5. Physics

    A 5 g bullet has a speed of 300 m/s and embeds itself into a 500 g block. The block is initially at rest sitting on a rough surface which has a coefficient of kinetic friction equal to 0.5. A) What is the speed of the block after

    asked by Melissa on October 15, 2015
  6. physics

    Two blocks, each with a mass m = 0.400 kg, can slide without friction on a horizontal surface. Initially, block 1 is in motion with a speed $v$ = 1.20 m/s; block 2 is at rest. When block 1 collides with block 2, a spring bumper on

    asked by Ted on March 5, 2014
  7. Physics

    Two blocks, each with a mass = 0.168 kg, can slide without friction on a horizontal surface. Initially, block 1 is in motion with a speed = 1.28 m/s; block 2 is at rest. When block 1 collides with block 2, a spring bumper on block

    asked by Lilly on March 5, 2012
  8. Physics

    a 2.0 kg block moving at 8 m/s on a frictionless surface collides elastically with a block at rest. The first block moves in the same direction at 2 m/s. What is the second block's mass?

    asked by Henry on April 3, 2013
  9. physics

    A 5.0 kg block with a speed of 2.8 m/s collides with a 10 kg block that has a speed of 2.0 m/s in the same direction. After the collision, the 10 kg block is observed to be traveling in the original direction with a speed of 2.5

    asked by Chelsey on October 30, 2011
  10. Physics

    A 3.2 kg block with a speed of 11 m/s collides with a 11 kg block that has a speed of 3.3 m/s in the same direction. After the collision, the 3.2 kg block is observed to be traveling in the original direction with a speed of 6.4

    asked by Ashley on November 1, 2011

More Similar Questions