Homework Answers
All of them have the same displacement which is the height of the building
Now v'2 = u'2 + 2as
[ I have used v' and u' because initial velocities are given in terms of symbol v which is just an arbitrary velocity]
So the one with highest u(initial velocity) will have highest v(final velocity)
So the second object having initial velocity 2v will have highest speed when it hits the ground
Add Answer to:
help!
Three objects are dropped from the top of a building. The first is thrown straight...
Three identical balls are thrown from the top of a building, all with the same initial speed
Three identical balls are thrown from the top of a building, all with the same initial speed. The first is thrown horizontally, the second at some angle above the horizontal, and the third at some angle below the horizontal. Neglecting air resistance, rank the speeds of the balls at the instant each hits the ground.
(AYK-2 modified) Two identical stones are thrown from the top of a building, both with and...
(AYK-2 modified) Two identical stones are thrown from the top of a building, both with and then again without air resistance. Stone 1 is thrown straight up, and stone 2 is thrown straight down with the same initial speed as stone 1. Which of the following statements are true (select all which apply)? □ without air resistance, stone I will hit the ground with a faster speed than stone 2 when it hits the ground. without air resistance, stone I...
A ball is thrown horizontally from the top of a 95 m building and lands 110 m from the base of the building.
A ball is thrown horizontally from the top of a 95 m building and lands 110 m from the base of the building. Ignore air resistance, and use a coordinate system whose origin is at the top of the building, with positive y upwards and positive x in the direction of the throw. Part (a) How long is the ball in the air in seconds? Part (b) what must have been the initial horizontal component of the velocity, in meters per second? Part(c)...
A ball is dropped from the top of a building 100 m high. (Ignore air resistance)...
A ball is dropped from the top of a building 100 m high. (Ignore air resistance) a) How long does it take the ball to hit the ground? b) What is the speed of the ball when it hits the ground?
A ball is thrown horizontally from the top of a 60.0-m building and lands 110.0 m...
A ball is thrown horizontally from the top of a 60.0-m building and lands 110.0 m from the base of the building. Ignore air resistance. (a) How long is the ball in the air? (b) What must have been the initial horizontal component of the velocity? (c) What is the vertical component of the velocity just before the ball hits the ground? (d) What is the velocity (including both the horizontal and vertical components) of the ball just before it...
A ball is thrown straight up from the edge of the roof of a building. A...
A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof a time of 1.14 s later. You may ignore air resistance. Part A If the height of the building is 21.0 m, what must the initial speed be of the first ball if both are to hit the ground at the same time? m/s Submit Request Answer Incorrect; Try Again; 3 attempts remaining Part B Consider the...
A ball is thrown horizontally from the top of a 63.0 -m building and lands 110.3...
A ball is thrown horizontally from the top of a 63.0 -m building and lands 110.3 m from the base of the building. Ignore air resistance. What is the vertical component of the velocity (in m/s) just before the ball hits the ground? (Indicate the direction with the sign of your answer.)
A ball is thrown straight up from the edge of the roof of a building of...
A ball is thrown straight up from the edge of the roof of a building of height 60.0m. A second ball is dropped from the roof 2s later. What must be the initial speed of the first ball if both are to hit the ground at the same time?
Three small metal balls are thrown at different speeds off the top of a building to...
Three small metal balls are thrown at different speeds off the top
of a building to hit the ground 25m below. Sphere A is thrown
directly downward at 10m/s, while Sphere B is dropped from rest.
Sphere C is thrown upwards at 5m/s. Ignore the effects of air
resistance.
Calculate the time for each sphere to hit the ground below.
Show your work clearly.
1D Kinematics. Accelerated motion.
Practice Problem Three small metal balls are thrown at different at speeds...
QUESTION 5 Alice and Tom dive from an overhand into the lake below. Tom simply drops...
QUESTION 5 Alice and Tom dive from an overhand into the lake below. Tom simply drops straight down from the edge, but Alice gets a running start and dives horizontally with an initial speed of 25 m/s. Neither experiences significant air resistance. Which of the following is true about their speeds when they each hit the water? O They will have the same speed. Alice's speed is greater than Tom's OAlice's speed will be exactly 9.8 m/s less than Tom's...
(AYK-2 modified) Two identical stones are thrown from the top of a building, both with and then again without air resistance. Stone 1 is thrown straight up, and stone 2 is thrown straight down with the same initial speed as stone 1. Which of the following statements are true (select all which apply)? □ without air resistance, stone I will hit the ground with a faster speed than stone 2 when it hits the ground. without air resistance, stone I...
A ball is dropped from the top of a building 100 m high. (Ignore air resistance) a) How long does it take the ball to hit the ground? b) What is the speed of the ball when it hits the ground?
A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof a time of 1.14 s later. You may ignore air resistance. Part A If the height of the building is 21.0 m, what must the initial speed be of the first ball if both are to hit the ground at the same time? m/s Submit Request Answer Incorrect; Try Again; 3 attempts remaining Part B Consider the...
Three small metal balls are thrown at different speeds off the top
of a building to hit the ground 25m below. Sphere A is thrown
directly downward at 10m/s, while Sphere B is dropped from rest.
Sphere C is thrown upwards at 5m/s. Ignore the effects of air
resistance.
Calculate the time for each sphere to hit the ground below.
Show your work clearly.
1D Kinematics. Accelerated motion.
Practice Problem Three small metal balls are thrown at different at speeds...
QUESTION 5 Alice and Tom dive from an overhand into the lake below. Tom simply drops straight down from the edge, but Alice gets a running start and dives horizontally with an initial speed of 25 m/s. Neither experiences significant air resistance. Which of the following is true about their speeds when they each hit the water? O They will have the same speed. Alice's speed is greater than Tom's OAlice's speed will be exactly 9.8 m/s less than Tom's...
Most questions answered within 3 hours.
-
Bourque Enterprises is considering a new project. The project
will generate sales of $1.5 million, $2.2...
asked 6 minutes ago -
data structures c++
please implement the QuickSort algorithm as a C++ function. Use
it to sort...
asked 6 minutes ago -
A young investment manager tells his client that the probability
of making a positive return with...
asked 9 minutes ago -
Calculate the final discrete available-to-promise quantity for
Week 1 using the following table.
Weeks
1
2...
asked 40 minutes ago -
Bob is gambling in the casino. The probability that he will win
nothing is 0.2. The...
asked 1 hour ago -
A free electron and a free proton are exactly 0.70 cm apart.
A)
Find the magnitude...
asked 1 hour ago -
Identify and Describe the major sources of U.S law. Provide a
sport-related example of each.
asked 2 hours ago -
NASA's Ames Research Center in Mountain View, California, houses
a 20g centrifuge used to conduct research...
asked 3 hours ago -
I want a python code using recursion ONLY.
I cannot use any loops, dictionaries or modules....
asked 3 hours ago -
Tobin Supplies Company expects sales next year to be $450,000.
Inventory and accounts receivable will increase...
asked 3 hours ago -
Give the relative rates for the following with a neighbor at your
desk
PH3(g) to P4(g)...
asked 4 hours ago -
Suppose Acap Corporation will pay a dividend of $2.87 per share
at the end of this...
asked 4 hours ago