A ball of mass m falls from a height h to the surface of the Earth.Which one of the following is correct?(assume that h is much smaller than the radius of the Earth)A) If we choose our system to be ball+Earth then the work done on the system is mgh.B) If we choose our s...
4 A hard ball of mass 1.0 kg falls freely from rest through a height of 80 m and comes to rest having penetrated 9.0 cm of sand.A80m Sand9.0 cm BFig. 4.1(a) Describe how the energy changes as the ball falls from A to B.(b) Determine the velocity of the ball just before it...
<p>To solve the problem of finding the kinetic energy (K.E.) of a ball when it reaches the ground after falling from a height of 4 meters, we can follow these steps:</p><p><strong>Step 1: Convert the mass from grams to kilograms</strong> The mass of the
A ball of mass 0.2kg is dropped from a height of 20m on impact on the ground it lose 30j of energy. Calculate the height which it reaches on the ground and rebound A ball of mass 8 \ kg falls from a height of 100 \ m, neglecting air resist...
- m = mass of the ball = 20 g = 0.02 kg (since 1 g = 0.001 kg)- g = acceleration due to gravity = 10 m/s²- h = height = 10 m Substituting the values:PE=0.02kg⋅10m/s2⋅10m=2J Step 2: Calculate the kinetic energy just before striking the ground As the ball falls...
7. (I1) A ball of mass m falls freely a distance h from rest. It hits the floor and rebounds to its starting height. (a)What total time is required for the motion? (Ignore the time of contact with the floor.) (b)What is the speed of the ball as it strikes the floor? (...
Answer to: A ball of mass 8 \ kg falls from a height of 100 \ m, neglecting air resistance. calculate its total energy after falling a distance. By...
for USMCA preference, while goods that do not satisfy USMCA rules of origin still face 25% tariffs, according to a White House fact sheet. It said that energy products imported from Canada that fall outside the USMCA preference and any potash imported from Canada and Mexico that falls out...
c) When does the ball reach its maximum height? d) What is the maximum height? e) Where would the ball be at 1.75 seconds? Round to the nearest meter. f) Explain what you would do to calculate the time(s) when the ball reaches the height of 59 meters. Ho...
1Ⅱ.完形填空(每小题1分,共10分)A drop of rain falls from a cloudand then runs into a small river. Thesmall river16it to a big river.Then the raindrop travels far to theeast into the17. Then the waterof the raindrop is at the top of the sea.As the18makes it very warm, it ...