A 1.4 kg block slides along a frictionless surface at 1.1 m/s . A second block, sliding at a faster 4.3 m/s , collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.3 m/s . What was the mass of the second block?
Let m1 and m2 be the mass of the first and the second block respectively. Let v1 and v2 be the initial velocities of the two blocks. The initial momentum of the system of two blocks is

After the collision, the two blocks combined to form a single block of mass m1+m2. Let v be the velocity of the combined blocks. The momentum of the system is

Applying the conservation of momentum








A 1.4 kg block slides along a frictionless surface at 1.1 m/s . A second block,...
A 2.3 kg block slides along a frictionless surface at 1.3 m/s . A second block, sliding at a faster 4.0 m/s , collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.3 m/s . What was the mass of the second block? m2=
A 2.3 kg block slides along a frictionless surface at 1.0 m/s . A second block, sliding at a faster 4.1 m/s , collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.0 m/s . Part A) What was the mass of the second block?
A 2.8 kg block slides along a frictionless surface at 1.3 m/s . A second block, sliding at a faster 4.7 m/s , collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.3 m/s .
A 1.3 kg block slides along a frictionless surface at 1.5 m/s . A second block, sliding at a faster 4.9 m/s , collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.0 m/s . What was the mass of the second block?
A 1.6 kg block slides along a frictionless surface at 1.0 m/s . A second block, sliding at a faster 4.4 m/s , collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.5 m/s . Part A What was the mass of the second block? Express your answer to two significant figures and include the appropriate units.
a 2.0kg block slides along a frictionless surface at 1.0 m/s. A second block, sliding at a faster 4.0 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.0 m/s. What was the mass of the second block?
please be descriptive so i actually understand it.
A 2.4 kg block slides along a frictionless surface at 1.3 in/s. A second block, sliding at a faster 4.2 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.3 m/s. What was the mass of the second block? Express your answer to two significant figures and include the appropriate units.
1- A block slides along a frictionless surface at 2.4 m/s. A second 3.5-kg block, sliding at a faster 7.5 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 4.6 m/s. What was the mass of the first block? 2-A 15 g ball of clay traveling west at 4 m/s collides with a 50 g ball of clay traveling 30° north of east at 3.5 m/s. What is the speed...
A 4.5-kg block moving at 2.0 m/s west on a frictionless surface collides totally inelastically with a second 1.0-kg block traveling east at 2.0m/s. a) Determine the final velocity of the blocks. b)Determine the kinetic energy of the first block before the collision. c)Determine the kinetic energy of the second block before the collision. d)Determine the kinetic energy of the first block after the collision. e)Determine the kinetic energy of the second block after the collision.
1. A block of mass m = 0.23 kg slides with initial velocity
v0 = 1.4 m/s along a frictionless surface (as in the
figure). The block next slides through a region of length d = 0.25
m with kinetic friction. After passing through the friction region,
the block slides up a curved ramp until momentarily coming to rest
at a height h above the level surface. If the kinetic friction
coefficient μ k = 0.204, what height h does...