Question

A 0.30-kg puck, initially at rest on a frictionless horizontal
surface, is struck by a 0.20-kg puck that is initially moving along
the *x*-axis with a velocity of 8.5 m/s. After the
collision, the 0.20-kg puck has a speed of 5.1 m/s at an angle
of

*θ* = 53°

to the positive *x*-axis.

(a) Determine the velocity of the 0.30-kg puck after the collision.

magnitude | m/s |

direction | ° from the positive x-axis |

(b) Find the fraction of kinetic energy lost in the collision.

|ΔKE| |

KE_{i} |

= %

Answer #1

A 0.300-kg puck, initially at rest on a horizontal, frictionless
surface, is struck by a 0.200-kg puck moving initially along the x
axis with a speed of 2.00 m/s. After the collision, the 0.200- kg
puck has a speed of 1.00 m/s at an angle of θ = 53.0° to the
positive x axis. (a) Determine the velocity of the 0.300-kg puck
after the collision. (b) Find the fraction of kinetic energy lost
in the collision.

A 0.300-kg puck, initially at rest on a horizontal, frictionless
surface, is struck by a 0.200-kg puck moving initially along the
x axis with a speed of 2.00 m/s. After the collision, the
0.200-kg puck has a speed of 1.00 m/s at an angle of ? =
49.0° to the positive x axis.
(a) Determine the velocity of the 0.300-kg puck after the
collision.
(b) Find the fraction of kinetic energy transferred away or
transformed to other forms of energy...

A 0.477 kg puck, initially at rest on a horizon-
tal, frictionless surface, is struck by a 0.22 kg
puck moving initially along the x axis with
a speed of 2.5 m/s. After the collision, the
0.22 kg puck has a speed of 1.5 m/s at an
angle of 38◦ to the positive x axis.
Determine the magnitude of the velocity of
the 0.477 kg puck after the collision.

A ball with a mass of 0.615 kg is initially at rest. It is
struck by a second ball having a mass of 0.405 kg , initially
moving with a velocity of 0.275 m/s toward the right along the x
axis. After the collision, the 0.405 kg ball has a velocity of
0.215 m/s at an angle of 36.9 ? above the x axis in the first
quadrant. Both balls move on a frictionless, horizontal
surface.
What is the magnitude...

A ball with a mass of 1.1 kg is initially at rest. It is struck
by a second ball having a mass of 1.3 kg, initially moving with a
velocity of 3.5 m/s toward the right along the x axis. After the
collision, the 1.3 kg ball has a velocity of 2.7 m/s at an angle of
35? above the x axis in the first quadrant. Both balls move on a
frictionless, horizontal surface. Do not assume that the collision...

On a frictionless horizontal air table, puck A (with mass 0.245
kg ) is moving toward puck B (with mass 0.373 kg ), which is
initially at rest. After the collision, puck A has velocity 0.118
m/s to the left, and puck B has velocity 0.647 m/s to the
right.
Calculate ΔK, the change in the total kinetic energy of the
system that occurs during the collision.

On a frictionless horizontal air table, puck A (with mass 0.252
kg ) is moving toward puck B (with mass 0.368 kg), which is
initially at rest. After the collision, puck A has velocity 0.121
m/s to the left, and puck B has velocity 0.651 m/s to the
right.
What was the speed vAi of puck A before the
collision?
= 0.830 m/s
Calculate ?K, the change in total kinetic energy of
the system that occurs in the collision.
= ?

On a frictionless horizontal air table, puck A (with mass 0.255
kg ) is moving toward puck B (with mass 0.375 kg ), which is
initially at rest. After the collision, puck A has velocity 0.121
m/s to the left, and puck B has velocity 0.653 m/s to the
right.
a) What was the speed vAi of puck A before the collision?
b) Calculate ΔK, the change in the total kinetic energy of the
system that occurs during the collision.

A hockey puck B rests on frictionless, level ice and is struck
by a second puck A, which was originally traveling at 40.0 m/s and
which is deflected 30.0◦from its original direction. Puck B
acquires a velocity at a 45.0◦to the original direction of A. The
pucks have the same mass. (a) What is the speed of each puck after
the collision?(b) What fraction of the original kinetic energy of
puck A dissipated during the collision? please show each step...

On a frictionless horizontal air table, puck A (with mass 0.246
kg ) is moving toward puck B (with mass 0.372 kg ), which is
initially at rest. After the collision, puck A has velocity 0.121
m/s to the left, and puck B has velocity 0.653 m/s to the
right.
Part A
What was the speed vAi of puck A before the
collision?
View Available Hint(s)
vAi =
1.111.11
m/s
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