Question

Block 1 of mass 2.0 kg is sliding to the right with velocity 8.5 and collides with blocks 2 mass 1.5 kg moving with velocity -2. The collision is perfectly elastic. What is the velocity of block 1 after the collision? Positive velocity indicates motion to the right while negative velocity indicates motion to the left.

Answer #1

A
6.0-kg block moving at 9.0 m/s to the right collides head-on with
another 12.0-kg block moving at 3.0 m/s to the left. What are the
velocities of the two blocks after the collision if the collision
is elastic?

A) A block of mass m1=6.0 kg is initially moving at 5.0 m/s to
the right and collides inelastically with an initially stationary
block of mass m2=18.0 kg. The two objects become stuck together.
Find the final velocity of the two blocks.
B) A block of mass m1=6.0 kg is initially moving at 5.0 m/s to
the right and collides elastically with an initially stationary
block of mass m2=18.0 kg.
After the collision, block m2 is moving to the right...

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?

Block #1 (4 kg) moves & collides with Block #2 (1 kg) with
u2 = 9 m/s /to the left. After the collision, Block #1 has v1 = 2.7
m/s /to the left and Block #2 has v2 = 7.8 m/s /to the right. By
calculation, show whether or not the collision is perfectly
elastic. NOTE: Use ONLY the two linear equations – no kinetic
energy is allowed.
m1*u1 + m2*u2 =
m1*v1 + m2*v2
u1
+ v1 = u2...

Mass #1 of 5.0 kg is moving at 2.0 m/s in the + x-direction, and
collides with mass #2 of 10. kg that is initially at rest, on a
frictionless horizontal surface. They collide elastically. Find
each velocity, after the collision.

Blocks A (mass 3.5 kg) and B (mass 5.5 kg) move on a
frictionless, horizontal surface. Initially, block B is at rest and
block A is moving toward it at 2.0 m/s. The blocks are equipped
with ideal spring bumpers (as in Example 8.10, Section 8.4). The
collision is head-on, so all motion before and after the collision
is along a straight line.
(a) Find the maximum energy stored in the spring bumpers, in
Joules.
(b) Find the velocity of...

A 2.50 kg mass moving 7.50 m/s to the right collides head on
with a 4.90 kg mass. After the collision the 2.50 kg mass is moving
5.00 m/s to the left and the 4.90 kg mass is moving 4.88 m/s to the
right.
a. Calculate the velocity of the 4.90 kg mass before the
collision
b. If the collision lasts for 0.0625 seconds calculate the force
that acted on each mass during the collision.

A.) Your mass is 75.2 kg, and the sled s mass is 18.3 kg. The
sled is moving by itself on the ice at 4.15 m/s. You parachute
vertically down onto the sled, and land gently. What is the sled s
velocity with you now on it?
B.) A block of mass 1.12 kg is placed on a frictionless floor
and initially pushed northward, whereupon it begins sliding with a
constant speed of 4.23 m/s. It eventually collides with a...

A 20 kg block is moving to the right at 15 m/s along a
horizontal frictionless road when it collides with a 40 kg block
moving to the right at 5 m/s. After the collision, the 20 kg mass
is moving to the right at 12 m/s. Find the velocity of the 40 kg
mass after the collision.

A ball of mass 2 kg is moving with a velocity of 12 m/s collides
with a stationary ball of mass 6 kg and comes to rest. calculate
the velocity of the 6 kg ball after the collision. (both balls are
elastic)

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