Question

A man has two rocks and throws the first one straight up ten meters high. At the instant the first rock reaches it's highest point, the man throws the second rock upward with the same in initial speed as the first. (a) What was the initial velocity of the first ball? (b) How long will it take the second ball to pass the first? (c) At what height will the two balls pass one another? (d) At that time, which ball is traveling faster? (e) How long was the first ball in the air?

Answer #1

A juggler performs in a room whose ceiling is 3 m above the
level of his hands. He throws a ball vertically upward so that it
just reaches the ceiling.
a. With what initial velocity does he throw the ball?
b. What time is required for the ball to reach the
ceiling?
He throws a second ball upward with the same initial velocity,
at the instant that the first ball is at the ceiling.
c. How long after the second...

A man throws a ball straight upward with speed 30 m/s from the
top of a building that is 75 m high. Ignore air resistance and
choose the vertical y-axis to be positive downward with
origin at the point of throw (top of the building).
Represent the initial velocity and the acceleration vectors in
the reference y-axis above.
Find the maximum height the ball reaches with respect to the
ground.
How long does it take the ball to reach the...

Two students are on a balcony 20.7 m above the street. One
student throws a ball (ball 1) vertically downward at 14.6 m/s; at
the same instant, the other student throws a ball (ball 2)
vertically upward at the same speed. The second ball just misses
the balcony on the way down. (a) What is the difference in the two
ball's time in the air?
b) What is the velocity of each ball as it strikes the ground? c)
what...

A girl throws a ball straight up into the air with the initial
velocity v0 = 18.0 m/s. At a certain point, the ball falls back
into the girl's hands.
a) What is the highest height the ball will reach?
b) How long is the ball in the open air?
c) What is the velocity of the ball just before it hits
again?

Two students are on a balcony 18.7 m above the street. One
student throws a ball (ball 1) vertically downward at 14.6 m/s; at
the same instant, the other student throws a ball (ball 2)
vertically upward at the same speed. The second ball just misses
the balcony on the way down. (a) What is the difference in the two
ball's time in the air? s (b) What is the velocity of each ball as
it strikes the ground? ball...

A rock climber throws a small first aid kit to another climber
who is higher up the mountain. The initial velocity of the kit is
13.0 m/s at an angle of 69.0∘∘ above the horizontal. At the instant
when the kit is caught, it is traveling horizontally, so its
vertical speed is zero. What is the vertical height difference
between the two climbers?

At t = 0, Ball 1 is dropped from the top of a 19 mm-high
building. At the same instant Ball 2 is thrown straight up from the
base of the building with an initial velocity of +12 m/sm/s. Assume
that Ball 1 starts from rest and that air friction can be ignored.
At what height will the two balls pass each other?
What is the velocity of each ball at the moment they are at the
same height?
Express...

A person standing at the edge of a cliff throws one ball
straight up and another ball straight down at the same initial
speed. Neglecting air resistance, the ball to hit the ground below
the cliff with the greater speed is the one initially thrown
1. Upward
2.Downward
3.Neither—they both hit at the same speed
I know the answer is 3. But I dont know how to prove it. Plz
help with it.

A small cannonball is shot straight up from the ground with a
launch speed of 26.3 m/s. 2.00 seconds after the cannonball is
launched, a ping pong ball is dropped from a height of 36.5 m. Both
objects only move in the y-direction.
2a. Where (with respect to the ground) do the cannonball and the
ping pong ball pass one another?
2b. How fast and in what direction are each of the balls
traveling when they pass one another?
2c....

A blue ball is thrown upward with an initial speed of 21.2 m/s,
from a height of 0.5 meters above the ground. 2.6 seconds after the
blue ball is thrown, a red ball is thrown down with an initial
speed of 11.7 m/s from a height of 25.7 meters above the ground.
The force of gravity due to the earth results in the balls each
having a constant downward acceleration of 9.81
m/s2.
A) What is the speed of the...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 18 minutes ago

asked 32 minutes ago

asked 53 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago