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
skelet666 [1.2K]
2 years ago
8

A stone is dropped from the top a 45m hign building how fast will it moving when it reaches the ground? Ande what will its veloc

ity be?
Physics
1 answer:
posledela2 years ago
7 0

Answer:

29.7 m/s fast, velocity is 29.7 m/s

Explanation:

Applying,

v² = u²+2gs...................... Equation 1

Where v = final velocity, u = initial velocity, g = acceleration due to gravity, s = distance.

Given: u = 0 m/s (dropped from height), s = 45 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

v² = 0²+2×9.8×45

v² = 882

v = √(882)

v = 29.7 m/s.

Hence the stone will be moving 29.7 m/s fast and the velocity is also 29.7 m/s

You might be interested in
Why is the sign of the emf of the second peak opposite to the sign of the first peak?
eimsori [14]
Because AC emf is a sine wave
7 0
2 years ago
Which of the following statements is true?
hram777 [196]

All the radiation from stars is the result of nuclear fusion in their cores.

4 0
3 years ago
Read 2 more answers
Jason walks 20 m East, turns around and 20 m West, Finally, he walks 10 rn North. This takes 20 s. what is Jason's velocity​
serious [3.7K]

Answer:

0.5 m/s north

Explanation:

Take east to be +x, west to be -x, north to be +y, and south to be -y.

His displacement in the x direction is:

x = 20 m − 20 m = 0 m

His displacement in the y direction is:

y = 10 m

His total displacement is therefore 10 m north.

His velocity is equal to displacement divided by time.

v = 10 m north / 20 s

v = 0.5 m/s north

3 0
3 years ago
Which ball has the greater average speed during the 1-s interval after release (assuming neither hits the ground during that tim
notka56 [123]

Answer:

The ball thrown downward

Explanation:

When the ball is thrown vertically, the acceleration of it is the gravity acceleration independent if it is thrown downward or upward. However, the acceleration is a vector, so, when the ball is thrown upward, the movement is against the gravity, so the acceleration is negative, and so, the velocity decreases during time; and when the ball is thrown downward, the movement goes to the gravity, so the acceleration is positive, so the velocity increase after time passes.

3 0
3 years ago
What is definition of population?
Oksanka [162]
All the inhabitants of a particular place or town, area or country
5 0
3 years ago
Other questions:
  • What statements correctly describe magnetism?
    6·1 answer
  • A 12 oz can of soda is left in a car on a hot day. In the morning the soda temperature was 60oF with a gauge pressure of 40 psi.
    14·1 answer
  • Okay guys I need serious help here plz!!!
    7·1 answer
  • Suppose you found a mineral crystal that looked like topaz. what two minerals could you use in a scratch test to help determine
    7·1 answer
  • A car is moving with a constant velocity of 25 m/s. Which of the following is true?
    10·1 answer
  • You pull a suitcase along the floor by exerting 43N at an angle. The force of friction is 27 N and the suitcase moves at a const
    12·1 answer
  • What is the net force on this object?​
    5·1 answer
  • PLEASE HELP ME AND REALLY NEED THIS ANSWER QUIKLY
    6·1 answer
  • What is the station 2 code for cupids spread the love escape room?
    10·1 answer
  • A baseball is tossed straight up in the air. The table shows the height and velocity of the ball at different times as it moves
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!