1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sp2606 [1]
3 years ago
14

A ball is hurled straight up at a speed of 15 m/s, leaving the hand of the thrower 2.00 m above the ground. Compute the times an

d the ball’s speeds when it passes an observer sitting at a window in line with the throw 10.0 m above the point of release.
Physics
1 answer:
SVETLANKA909090 [29]3 years ago
3 0

Answer:

5.37 m/s

0.98 seconds

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times -9.81\times 10+15^2}\\\Rightarrow v=5.37\ m/s

Velocity of the ball when it passes an observer sitting at a window is 5.37 m/s

v=u+at\\\Rightarrow t=\frac{v-u}{a}\\\Rightarrow t=\frac{5.37-15}{-9.81}\\\Rightarrow t=0.98\ s

Time taken by the ball to pass the observer sitting at a window is 0.98 seconds

You might be interested in
A plane flying against a jet stream will travel faster than a plane traveling with a jet stream.
kotykmax [81]

Their "airspeeds" (speed through the air) are equal, but the one traveling in the
same direction as the jet-stream appears to move along the ground faster.

7 0
3 years ago
Read 2 more answers
Chemical energy is stored in food until it is eaten. The energy in food is an example of _______.
777dan777 [17]
Potential energy is the answer
4 0
3 years ago
_ NaBr + __ H3PO4 → ___ Na3PO4 + __ HBr
algol [13]

Answer:

The balanced equation is 3NaBr+1H3PO4 ----> 1Na3PO4 + 3HBr

This is a double replacement because you are switching both the Na and the Hydrogen.

Explanation:

3 0
3 years ago
How are passengers affected when a moving bus is stopped suddenly? Explain with reason.<br>​
Mademuasel [1]

Answer:

When a moving bus stops suddenly, the passenger are pushed forward because of the inertia of the passengers. ... Because the lower part of the body comes to rest with the bus while the upper part tends to continue its motion due to inertia.

Explanation :

The passengers in a bus tend to fall backward when it starts suddenly due to inertia as the passengers tend to remain in the state of rest while the bus starts to move. When the bus stops suddenly, people fall forward because their inertia as they are in state of motion even when the bus has come to rest.

Hope this helps!! <3

Please mark as branliest

5 0
2 years ago
Which is the second largest planet in our solar system.
hammer [34]

Saturn is the second largest planet in our solar system. At an average distance of 800 million miles (1.3 billion kilometers) from Earth, Saturn is the farthest planet that can be seen without a telescope. Saturn is the sixth planet from the sun. Because Saturn is so far away from the sun, Saturn is considered one of the outer planets. Despite it's large size, Saturn is the least dense planet in our solar system!

6 0
3 years ago
Other questions:
  • A car of mass 998 kilograms moving in the positive y–axis at a speed of 20 meters/second collides on ice with another car of mas
    10·1 answer
  • An archer pulls her bowstring back 0.376 m by exerting a force that increases uniformly from zero to 251 N. (a) What is the equi
    8·1 answer
  • In which of the following ways is a puffin dependent upon salmon? Question 4 options: Puffins have a commensalistic relationship
    10·2 answers
  • How far can a person run in 13.22 minutes if he or she runs at an average speed of 12.33 km/hr?
    5·2 answers
  • Cobaltâ’60 is a radioactive isotope used to treat cancers of the brain and other tissues. A gamma ray emitted by an atom of this
    14·1 answer
  • What are some drawbacks of electron microscopes? 3. If an object being viewed under the phase-contrast microscope has the same r
    7·1 answer
  • what is the efficiency of an engine that dies 288 J of work and exhausts 72 J of heat while taking 360 J of heat?
    10·1 answer
  • A mover loads a 100 kg box into the back of a moving truck by
    9·1 answer
  • What are various systems of unit?​
    13·2 answers
  • I need help with this physics question ASAP. Thanks!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!