Question: A big rock falls from a height towards water below, and hits water at a speed of 12 m/s. Rock was at a height of

A big rock falls from a height towards water below, and hits water at a speed of 12 m/s. Rock was at a height of 15 m before falling and weighs 65 kg.

a) What was the average force of air resistance (e.g., friction) acting on the rock? b) What is the force of friction underwater if the rock reaches a depth of 2.5 m before stopping and there is a buoyant force of 650 N [upward] acting on the rock once underwater.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Physics Questions!

Expectations: Address concept A and B in about 150 words each. You will be graded on how well you demonstrate knowledge and understanding of the concept, and critical thinking pertaining to the...

SCIENCE AND HEALTH VI ______1. What substances or chemicals prevent food from decomposition? a) additive b) preservatives -, ' c) solvent d) soap ______2. It is a substance capable of dissolving...

11. The tolerance is -+ 1 in the 3rd significant digit. Current Attempt in Progress A rock is shot vertically upward from the edge of the top of a tall building. The rock reaches its maximum height...

A stone is thrown horizontally with an initial Speed 0f10 m/s from th d e e stones trajectory time from the top of the cliff t0 the bottom to be 4 3 s g6 of a cliff. A stop watch measm-es the What is...

Free Fall Worksheet For each of the following problems write the fundamental mathematical model to use, rearrange it to the form required to solve the problem, then solve the problem. Be sure to...

Can you solve for the answers and show the work for each, except for the multiple choices 1. An object is dropped from rest and falls freely 20. meters to Earth. When is the speed of the object 9.8...

1. What is a tangent line and what is it used for? Sketch an example. 2. What value is the slope of a v vs t graph for a free-falling object? Why? 3. If wind resistance was included in the previous...

This is a review for an exam, no need for explanations just answers. Thanks in advance!! Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The total...

Questions in attachments. please explain your answers. Refer to the figure. 30 N 12N 30 ISN w. E ISN 160m 1. Find the total work done on the block. 2. The block has a mass of 18 kg and has an initial...

Problem 1: A coin is dropped from a hot air balloon that is 300 m above the ground and rising at 10 m/s upward. For the coin, find The maximum height reached. Its position and velocity 4 s after...

image below: QUESTION 1 A = 3.47 7 + 8.98 j + 5.92 K A = ? Input answer using 3 significant figures 10 points Save Answer QUESTION 2 A= 8.1 7 5.027 Calculate the angle in degrees between the vector A...

Question 1: (a) A block of mass 5 kg is pushed along a horizontal surface by a force of 10 N. The coefficient of kinetic friction between the block and the surface is 0.2. What is the acceleration of...

What are some advantages and disadvantages of housing a project in a functional form?

Find the Wronskian W Y h = C 1 e 7 x C 2 e 6 x C 3 e - 8 x f ( x ) = 8 x 5 6 x

A magnetic dipole with a dipole moment of magnitude 0.020 J/T is released from rest in a uniform magnetic field of magnitude 52mT. The rotation of the dipole due to the magnetic force on it is...

What are cash equivalents, and why are they included with cash on a statement of cash flows?

What is a Eurodollar? If a French citizen deposits $10,000 in Chase Manhattan Bank in New York, have Eurodollars been created? What if the deposit is made in Barclays Bank in London Chase Manhattans...

Luggage is transported from one location to another in an airport by a conveyor belt. At a certain location, the belt moves down an incline that makes an angle of.2.5o with the horizontal. Assume...

A 4.00-g bullet, traveling horizontally with a velocity of magnitude 400 m/s, is fired into a wooden block with mass 0.800 kg, initially at rest on a level surface. The bullet passes through the...

AllFix and a movie studio have signed a revenue- sharing contract for Blu-Ray discs. Each BD costs the studio $6 to produce. The BDs will be sold to AllFlix for $7 each. AllFlixin turn prices a BD at...

1. To provide knowledge about various influencing techniques in communication situations.

1. Information that is currently accessible (recognition).

8. Based on the model in Fig. 10.2 in this chapter, analyse yourself and find out which cell you would place yourself in. Let another person in the group analyse you. Did he/she choose the same cell...