Question

Please show work symbolically:

Two 25 kg blobs are fired towards one another from opposite ends of a football field (distance = 100 m). They are fired at the same initial velocity of 50 m/s and at the same angle of 30 degrees from the horizontal field.

Immediately prior to their collision, what height are they at? What is their momentum in both x and y directions at collision? What is the kinetic energy of the new combined blob after collision? What is the max height of the combined blob after collision? What will its velocity be when it hits the ground?

Answer #1

Two 2.4 kg balls are attached to the ends of a thin rod of
negligible mass, 54 cm in length. The rod is free to rotate in a
vertical plane about a horizontal axis through its center. With the
rod initially horizontal as shown, a 0.33 kg wad of wet putty drops
onto one of the balls with a speed of 3.7 m/sec and sticks to
it.
1)What is the ratio of
the magnitude of angular momentum of the entire...

Two seconds after a projectile is fired from a gun, located on
the ground, it has a velocity equal to: v = 30i +20.4j, m/s
1.) Determine the initial speed of the projectile
2.) At what angle is the projectile fired?
3.) How long does it take the projectile to reach the highest
point in its trajectory?
4.) What is the speed of the projectile at it's highest point in
its trajectory?
5.) What is the magnitude of the projectile's...

A)A 2.9 kg block of wood sits on a table. A 0.0035 kg bullet,
fired horizontally at a speed of 440 m/s, goes completely through
the block, emerging at a speed of 140 m/s.What is the speed of the
block immediately after the bullet exits?
Answer in m/s
B)A small, 0.43 kg cart is moving at 1.4 m/s on an air track
when it collides with a larger, 5 kg cart at rest. After the
collision, the small cart recoils...

1. Two identical eggs were thrown at the same time from the top
of a building of height 100 m at a speed 20. One egg was thrown at
an angle 40° above the horizontal while another was thrown at the
same angle but below the horizontal. How long does it take for the
other egg to hit the ground after the one of the eggs hits the
ground?
Does the time difference between the eggs hitting the ground
depend...

A 124 kg shell fired from cannon explodes and breaks into two
equal parts at some height. after explosion, one part moves with
speed of 112 m/s at an angle of 30 degrees above the horizontal,
and the other part moves with a speed of 80 m/s at an angle of 45
degrees below the horizontal. What was the b=velocity of the shell
before explosion?

25.) Suppose you are traveling in a bus at highway speed on a
nice summer day and the momentum of an unlucky bug is suddenly
changed as it splatters onto the front window. a) Compared to the
force that acts on the bug, how much force acts on the bus. (more)
(the same) (less)
b) Although the momentum of the bus is very large compared to
the momentum of the bug, the change in momentum of the bus compared
to...

A 0.00600 kg bullet traveling horizontally with speed 1.00
103 m/s strikes a 21.4 kg door, embedding itself 11.3 cm
from the side opposite the hinges as shown in the figure below. The
1.00 m wide door is free to swing on its frictionless hinges.
A door shown from above such that its hinge is on the top side
of the figure with the door going down. A bullet is traveling
horizontally to the right towards the door on the...

Two 3.20 kg balls are attached to the ends of a thin rod of
length 75.0 cm and negligible mass. The rod is free to rotate in a
vertical plane without friction about a horizontal axis through its
center. With the rod initially horizontal (the figure), a 65.0 g
wad of wet putty drops onto one of the balls, hitting it with a
speed of 3.68 m/s and then sticking to it. (a)
What is the angular speed of the...

Two seconds after being projected from ground level, a
projectile is displaced 40 m horizontally and 53 m vertically above
its launch point. Its horizontal component of initial velocity is
v0x=20 m/s. Its vertical component of initial velocity
is v0y=36 m/s. At the instant the projectile reaches
maximum height above ground level, the displacement is x=74 m.
Answer questions a, b, and c below. Show all work and details.
Give explanation for your answer.
a) What is the horizontal range...

Questions (use complete sentences)
1) What is a conservation law? What is the basic approach taken
when using a conservation law?
2) Could the linear momentum of a turtle be greater than the
linear momentum of a horse? Explain.
3) Carts A and B stick together whenever they collide. The mass
of A is twice that of B. How could you roll the carts so that they
would be stopped after a collision?
4) How can a satellite’s speed decrease...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 21 minutes ago

asked 21 minutes ago

asked 29 minutes ago

asked 33 minutes ago

asked 38 minutes ago

asked 45 minutes ago

asked 48 minutes ago

asked 56 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago