How long does it take a rock to fall 30 meters if it is released from rest ? Show calculations

Q: The largest species of penguins in the Emperor penguin, which can reach a height of 1065 mm and a…

A: Height of penguin, h = 1065 mm Mass of penguin, m = 40.8 kg

Q: A person drove 5 miles from home to the store. She took a different route back home that was only 4…

A: Motion of person (i) 5 miles from home to store  (ii) 4 miles from store to back home

Q: Convert a velocity of 60 miles per hour to units of feet per second.

A: Given data: Velocity (v) = 60 mi/hr Required: The velocity in ft/s

Q: A stone is dropped from a cliff to the stream below. It takes 3.28 seconds for the stone to hit the…

A: Using equation of motion, Considering that the initial velocity of the stone is zero.

Q: The speed of an object is 4 m/s.  How far, would it travel in 2 hours?

A: The expression for find distance is d=vt

Q: Surprsingly, very few athletes can jump more than 2 feet (0.6m) straight up. Use d=1/2gt squared and…

A: The time the athlete spends moving upwards is,

Q: If a cart takes 4 s to move 3.8 m, how long will it take to move 12.8 m?

A: Given data:  Distance (d) = 3.8 m Time (t) = 4 s Required: Time taken by car to move 12.8 m

Q: The following travel times were measured for vehicles as they traveled a 15-mile segment of highway.…

A: The distance travelled by the vehicles is d=15 miles…

Q: Convert 60 miles per hour into meters per second

A: Given data:  60 miles per hour Required: Answer in meters per second

Q: In a track meet a sprinter runs 400 meters in 100 seconds what was the sprinters average speed

A: Requried : In a track meet a sprinter runs 400 meters in 100 seconds what was the sprinters average…

Q: Three people are walking. The first person walks at a slow pace, the next walks at a medium pace,…

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Q: Car a is moving at a volacity of 4.5 m/s and at an acceleration of 1.5 m/s^2 while car B is…

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Q: After completing a journey of 84 km. A cyclist noticed that he would take 5 hours at least. if he…

A: Let the speed of cyclist be v Distance cyclist travelled d= 84 km Cyclist take time t= 5 hours If it…

Q: Check all all true statements in terms of Velocity and Speed 素 Units don't matter in final answer…

A: Given Select the correct statement from the following about speed and velocity

Q: Nerve impulses in the human body travel at a speed of about 100 ms-1. A 1.6m tall man accidentally…

A: Given data The speed of the nerve is given as v = 100 m/s. The height of the man is given as h =…

Q: You drop a marble from the top of a 90.2 meter building. The speed of the marble is ( _)m/s when it…

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Q: How fast was a plane flying if it traveled 800km in 50 min *

A: How fast was a plane flying if it traveled 800km in 50 min *

Q: A rock is thrown upward from the ground its height in feet above the ground after t seconds is given…

A: Given, height of the rock, ft = -16t2 + 20t

Q: A spring 0.2 m long extends 0.001 m when a mass of 72 kg is hung from it.  How far will a similar…

A: GivenFor spring 1length of spring ,L1=0.2 mMass hung with spring ,m1=72 kgSpring extend to length…

Q: The values below in boxes should be written in scientific notation: 8002 x 107 -10 1000 5 J.…

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Q: 1:Newton is the unit of ? O 1-weight 2- mass O 3- speed 4- time O O O

A: Hi, your have posted multiple questions without specifying which question to be solved so we will…

Q: From a ravine that is 141 meters high, a stone is dropped. How long will it take to fall to the…

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Q: A distance of 2495 km was travelled by air plane at two speeds. From the start to a certaian time of…

A: Solution- Let plane travel distance d1 with speed v1 in time t1.(start to a certain time of flight)…

Q: If a car is traveling at 45 mi/h, determine its speed in meters per second. Round to 3 significant…

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Q: Show that 1.0 m/s = 3.6 km/h Hint: Show the explicit steps involved in converting the above…

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Q: A man is standing near a window. The window is 7.14 meters tall. The man watches a falling atone…

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Q: The cart moved a distance of 165 cm. How many meters did the cart move? (1 meter m 100 centimeters)

A: Given: The distance moved by cart, d=165 cm   To convert the above distance into meters.

Q: Amereruns 1/10 miles in 2/3 mins.What is his speed in miles per minute.

A: Given data:  Distance (d) = 1/10 miles Time (t) = 2/3 minutes Required: Speed in miles per minute

Q: If a rock of mass 6kg is dropped from a height, and has a velocity of 5 m/s when it hits the ground,…

A: The kinetic energy of the rock just before it hits the ground will be KE=12mv2=126kg5m/s2=75J

Q: Student Height (in feet and inches) Physics Student Mass (in kg) Stair height (in m) Time (in s) #1…

A: yeh, you have done correctly F=mg and work done W= Fd

Q: A south African frog is capable of jumping as far as 10 m in one hop. Suppose he made 5 of these…

A: Velocity of of an object  is defined as the displacement or distance  covered per unit time. It is…

Q: An object is thrown up from the ground and reaches a height of 100 m after 4 seconds. (Use -10 m/s…

A: Given: The height reached by the object is 100 m. The time duration is 4 s. The acceleration due to…

Q: An explosion causes debris from the ground to rise vertically with an initial velocity of 160 feet…

A: Given data: Initial velocity (v0) = 160 ft/s Height (h) = 300 ft Required: The speed at height 300…

Q: A truck slows down from 11.8m/s to 8.4m/s. During this time, the truck covered a distance of 543m.…

A: Given(s): Initial speed, u=11.8 m/s. Final speed, v=8.4 m/s. Distance covered, s=543 m. Require:…

Q: a falling stone takes 0.31s to travel past a window 2.2 m tall. What height above the top of the…

A: Using kinematic equation, the expression for find initial velocity is x=ut+12at2u=x-12at2t…

Q: In a swimming race, Briana swam 50 meters in 40 seconds.  What is her average speed?

A: The given data are: d=50 mt=40 s Here, d denotes the distance and t denotes the time.

Q: the height of a horse is sometimes given in units of hands . is it a good standard for length

A: Human hands come in different sizes. Male tend to have longer hands than females. Also A tall person…

Q: Stopping distance of a car moving with speed 30 km/h is 2 m. If the speed is 70 km/h, what will be…

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Q: What is this equation in physics

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Q: A falling flower pot takes 0.33 seconds to travel past a window that is 2.2 meters tall. From what…

A: Given: The vertical height of the window is 2.2 m. The time taken by the flower pot to cross the…

Q: A scientist drops two balls A and B from the same height. Ball A falls 4 meters in the 1st second, 9…

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Q: When the driver applies the brakes of a light truck traveling 10 km/h, it skids 3 m before stopping.…

A: GIVEN THAT FOR FIRST CASE , u =10Km/h⇒U=10×518=5018=2.78m/s , AND S=3 m FOR THE SECOND CASE u=…

Q: the distance between an object falls from rest varies directly as the square of time. if an object…

A: The relationship between displacement and time is  S = kt²  where S represents displacement, t is…

Q: According to Guinness, the tallest man to have ever lived was Robert Pershing Wadlow of Alton,…

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Q: What is the speed at impact of a stone that is dropped from a height of 60 meters?

A: Given data: Height of the stone, h=60 m

Q: Calculate the speed of a dog running through a field if he is covering 23.7 meters in 54 seconds.

A: Given data :        Time = t        Distance = D         To find :                 Speed of dog

Q: A man has a pace factor of 0.65/pace. If a distance on the ground was measured to be 45.50m, it…

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Q: A man walks 7km to the east in 2 hours and 2km in 1 hour in the same direction. Find the average…

A: Given:  A man walks d1 = 7 km in t1 = 2 hours, in east direction  d2 = 2 km in t2 = 1 hour, in east…

Q: The height of a cannonball, h, in meters, over time, t, in seconds, as it is shot off a platform can…

A: Given  h = -4(t +2)*(t-8)  Where h is in meters and t is in second.