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
Naddik [55]
3 years ago
12

A rock is dropped from the edge of a cliff into a pool of water. Assume free-fall acceleration is 10 m/s per second, and air res

istance can be neglected. If the rock falls for 2.0 seconds before it hits the water, the height of the cliff above the pool is ___________.
Physics
1 answer:
il63 [147K]3 years ago
7 0

Answer:

20 m

Explanation:

From the equation of motion,

S = ut+1/2gt²................................. Equation 1

Where S = Height, u = initial velocity, t = time, g = acceleration due to gravity.

Note: Because the rocked is being dropped from a height, acceleration due to gravity is positive (g), and initial velocity (u) is negative

Given: t = 2.0 s, g = 10 m/s², u = 0 m/s (dropped from height)

Substituting into equation 1

S = 0(2) + 1/2(10)(2)²

S = 5(4)

S = 20 m

Hence the height of the the cliff above the pool is 20 m

You might be interested in
A car travels 90 meters due north in 15 seconds. Then the car
tatyana61 [14]
I got you kid It’s A- 2.5m/sb
6 0
3 years ago
A rocket consists of a shuttle and a fuel tank. The rocket flies through the air with a momentum of 180000kgm/s at a velocity of
babunello [35]

Answer:

Answer is 1000kg

Hope it help

6 0
2 years ago
Help please, It's for science :>
xenn [34]

Answer:

he tail of the arrow moves a distance of 0.5 m as the arrow is shot. yare yare daze

Explanation:

3 0
3 years ago
Read 2 more answers
The magnetic field around a magnet is called<br> Plss tell me fasssttt
Olenka [21]

Explanation:

The magnetic needle of a compass lines up with Earth's magnetic poles.

6 0
2 years ago
An object start from rest with a constant acceleration of 8.00 m/s^2 along straight line.
san4es73 [151]
I’ll say c Bc it make more since to find the travel distance
7 0
3 years ago
Other questions:
  • Why is a football firm when it is inflated to its proper pressure
    8·1 answer
  • A circular surface with a radius of 0.057 m is exposed to a uniform external electric field of magnitude 1.44 × 104 N/C. The mag
    8·1 answer
  • If velocity is positive, which would most likely yield a negative acceleration?
    7·1 answer
  • Explain what voltage,current, resistance are and how they relate to Ohms law. Then give examples
    11·1 answer
  • describe the motion of a pendulum in terms of kinetic and potential energy when it goes from its highest point to lowest point,
    14·1 answer
  • A 1.2-kg ball drops vertically onto the floor, hitting with a speed of 25 m/s. Consider the impulse during this collision. Would
    9·1 answer
  • 488 J of work is done to a box which is moved across the floor for a distance of 8.9 m. What net force is required to act on the
    15·1 answer
  • You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor. (a) If
    12·1 answer
  • Hdkshshgsksisbsgshsbisheghs be iwhghhfhjdjjh
    11·1 answer
  • What is the acceleration of a car that starts from rest and achieves a speed of 45 m/s in 5 seconds?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!