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
Bezzdna [24]
3 years ago
15

A cannon fired horizontally at 20 m/s from the top of a cliff lands 80m away. how tall is the cliff

Physics
1 answer:
Scorpion4ik [409]3 years ago
8 0

Answer:

The height of the cliff is, h = 78.4 m

Explanation:

Given,

The horizontal velocity of the projectile, Vx = 20 m/s

The range of the projectile, s = 80 m

The projectile projected from a height is given by the formula

                            <em> S = Vx [Vy + √(Vy² + 2gh)] / g </em>

Therefore,  

                            h = S²g/2Vx²

Substituting the values

                             h = 80² x 9.8/ (2 x 20²)

                                = 78.4 m

Hence, the height of the cliff is, h = 78.4 m

You might be interested in
How does a bicycles kinetic energy change when it slows down?
-Dominant- [34]
The kinetic energy decreases 
7 0
3 years ago
How are mass and inertia related
DiKsa [7]
Hello :))

Mass is dependent on the inertia of an object:))

Hope this helps
8 0
3 years ago
Read 2 more answers
Which statements describe the motion of the object represented by the graph? Check all that apply.
bonufazy [111]

Answer:

The object is moving away from the origin

The object started at 2 meters

The object is traveling at a constant velocity

Explanation:

5 0
3 years ago
A cricket player hit a ball of mass 250 g moving with velocity of 6 m/sec. if ball move with a velocity of 9 m/sec in opposite d
PolarNik [594]

Explanation:

Given that,

Mass of a ball, m = 250 g = 0.25 kg

Initial velocity of the ball, u = 6 m/s

Final velocity of the ball, v = -9 m/s

(a) Impulse of the system is given by :

Impulse = change in momentum

J = m(v-u)

J = 0.25(-9-6)

= -3.75 kg-m/s

(b) Impulse = Ft

If t = 0.5 min = 30 s

So,

F=\dfrac{J}{t}\\\\F=\dfrac{-3.75}{30}\\\\F=-0.125\ N

So, impulse of the system is -3.75 kg-m/s and the force is -0.125 N.

8 0
3 years ago
EASY BRAINLIEST PLEASE HELP!!
erastovalidia [21]

Answer:

ok but where is your question

Explanation:

<h2>MARK ME BRAINLIEST PLZZZZZZZZZZZZZZZZZ</h2>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following statements are true of solar energy?
    6·1 answer
  • If 100 grams of vinegar and 5 grams of baking soda are poured in a container, a small amount of gas will be produced. What will
    11·1 answer
  • Sound waves are a longitudinal wave that have a speed of about 340 m/s when traveling through room temperature air. What is the
    9·1 answer
  • What is the relationship between the mass of an object and the amount of force required to drag it across the table?
    8·1 answer
  • A spacecraft that renters the earth’s atmosphere drastically slows down. The amount of kinetic energy the spacecraft has as it r
    11·1 answer
  • What prevents the pressure from increasing as a cloud contracts due to its gravity?
    7·1 answer
  • if there are infinite universes is it possible that there is a universe where 1+1=3 or 4 or something
    6·1 answer
  • What season is it in your town when it is fall in the Southern Hemisphere
    11·2 answers
  • Various radial points on a rotating Ferris wheel have: I. different linear velocities II. different angular velocities III. equa
    5·1 answer
  • An earthquake is a natural rapid shaking of the _______ caused by the release of stored energy in rocks
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!