A 0.60 kg rubber ball is thrown into the air. At a height of 30 m above the ground, it is travelling at 18 m/s. a. What is the ball's kinetic energy at 30 m above the ground? b. What is its gravitational potential energy relative to the ground at 30 m above the ground? c. What was the speed of the ball when it left the ground(assume h = 0)?
Q: A cannonball with mass 20 kg is fired from a cannon sitting at the top of a 30-m tall hill. The…
A: Formula of initial kinetic energy is as follows: Ki=12mu2…
Q: A 15 kg cart is moving with a velocity of 7.5 m/s down a level hallway. A constant force of 10 N…
A: Given data: The mass of the cart is m = 15 kg The initial speed of the cart is u = 7.5 m/s The force…
Q: 2. A 60 kg skier slides down a hill, and their potential energy versus horizontal position (x) is…
A:
Q: 0.54 kg object travels from point A to point B. If the speed of the object at point A is 7.0 m/s and…
A:
Q: elevator cable breaks when a 925 kg elevator is 22.5 m above the top of a huge spring (k = 8.00×104…
A:
Q: 4. A driver initially at rest accelerates her 1500 kg car to a final velocity of 30 m/s. a. What is…
A:
Q: Someone drops a 63.5 g rock off of a docked cruise ship, 82.0 m from the water line. A person on a…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: Someone drops a 63.5 g rock off of a docked cruise ship, 82.0 m from the water line. A person on a…
A:
Q: 10. A person jumped into the ocean from a car which was 320 m above the water's surface. He had a…
A: Given: mass of person, m = 94 kg Initial height of person, h1 = 320 m final height, h2 = 75 m
Q: 30 kg box is placed on a 1.9 m tall shelf. a). What is the gravitational potential energy of the…
A: mass = m = 30kg height = h = 1.9 m
Q: 1. A 6.2kg box is moving at 2.4m/s to the left. a) What is its kinetic energy? 2.4m/s 6.2kg b) How…
A: Given data: Mass (m) = 6.2 kg Initial velocity (u) = 2.4 m/s Work done by the friction (W) = -4 J…
Q: A rope with 30 N tension pulls a 10 kg case 3 m across a horizontal floor starting from rest. The…
A:
Q: You push a 10kg box across the floor. After it leaves your hand, it’s moving at 3m/s. a.What type…
A:
Q: A 5.5 kg bird is flying 12 m above the ground. What is the Potential energy of the bird is…
A: Mass of bird (m) = 5.5 kg Height of bird above ground (h) = 12 m g = 9.8 ms2
Q: On a frictionless horizontal surface, a 4.23 kg block is pushed up against a 6,768 N/m spring and…
A: Write the given values with the suitable variables. m=4.23 kgk=6768 N/mx=0.27 m Here, m, k, and x…
Q: What is the gravitational potential energy of a 50 N bird at a height of 50 meters? A. 2500 J…
A: Given Data : The weight of the bird is given as W = 50N. The height of the bird is given as H = 50m.
Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…
A:
Q: What is the gravitational potential energy of a 300 N cat at a height of 6 meters? A. 183 N B.…
A: Option C Is the right answer 1800 J
Q: 1. A1 kg rock is at a height of 100 meters. a. What is the rock's gravitational potential energy at…
A:
Q: You drop a sphere of mass 14.0 grams from a height of 13.0 m above the ground into free fall. As the…
A: Mass of the sphere,
Q: A bead mass 40.0 g slides from rest down a very smooth frictionless wire as shown in Figure 6. A 3.2…
A:
Q: The total energy of an object at rest 10 m above the ground on a building is 200 J. The object is…
A: Given , Total energy at 10m above the ground = 200 J Height ,h = 10m acceleration due to gravity, g…
Q: A 70-kg hiker hikes from an elevation of 1,209 m to an elevation 2,199 m. i. What is the hiker’s…
A: i) As the hiker moves from a lower elevation to a higher one the gravitational potential energy of…
Q: A hiker of mass 63 kg is going to climb to the top of mount tam, which has an elevation of 2,574 ft.…
A: Given,Mass of the hiker, m = 63 kgheight of the mountain, H = 2574 ftThe hiker starts from, h = 375…
Q: There is a 23.1 kg box that starts with an initial velocity of 23.5 m/s. The box moves up a hill…
A:
Q: 2. You throw a 3 kg ball upwards: it goes up, turns around, and falls back down. At some point…
A:
Q: Sgown is the potential-energy diagram for a 20 g particle that is released from rest at x = 1.0 m.a.…
A:
Q: 1. A block of mass 12.0 kg is placed on a rough incline with an angle of 30° (g = 10 m/s²). The…
A: Consider the following diagram A block of mass m=12kg is on an inclined plane. The forces acting on…
Q: In the movie Monty Python and the Holy Grail a cow is catapulted from the top of a castle wall over…
A:
Q: 2. The graph shows the x component of the net force on an object versus position. The work done by…
A: Solution:-We know that The work done is given as,W= FdWhere F - force d - displacement
Q: A 900 kg elevator is raised by an electric motor up from the basement to the third floor, a vertical…
A:
Q: A soccer ball flying through the air in free fall at some height above the ground has a kinetic…
A: The kinetic energy of a soccer ball at one position,
Step by step
Solved in 2 steps
- 8. A ball has a 17 J of kinetic energy and its mechanical energy is 25 J. Find the potential energy of the ball. a. b. If the ball has a mass of 3.2 kg, what is its height above the ground? c. What is the speed of the ball?A huge cruiser with a mass of 6.50x107 kg has a velocity of 12 m/s in a instant. A. What is the kinetic energy of the spacecraft at this time? B. How much work does it take to stop it? C. What is the magnitude of the constant force to stop it, if it has a 2.5 kilometer displacement?A track has three hills. A-18m, B=10m, C=5m. Mass of the ball=2kg. The ball descends down the first hill and reaches the bottom (closed system) A. What is the speed of the ball at the bottom of hill A? B. The continues up hill B. What is the speed at the top of the hill B C. The ball continues to roll up hill C. What is the ball speed at the top of the hill C? D. What will be the answer to (a) if a 4kg ball is used? Why?
- There is trampoline which is connected to spring on the bottom. The spring constant is 1000 N/m. You are holding a mass of 27 kg at 5.0 m above the top of the trampoline.a.Calculate the potential energy of the mass with respect to the trampoline top. b. Now you decide to drop the mass to the trampoline, calculate velocity when it hits the trampoline? C If trampoline spring compresses 9 cm down, calculate the spring potential energy?. Calculate the potential energy of a 75 Kg boulder sitting at the edge of a cliff that is 210 meters from the ground (yf=0). b. If the boulder is suddenly pushed over the side of the cliff what is the velocity of the boulder when it is 50 meters from the ground?Timmy (m=50kg) is at the top of a 7m tall hill. a. What type of energy does he have at the top of the hill? b. What is his potential energy? c. What type of energy does he have at the bottom of the hill? d. What is his speed at the bottom of the hill, after he slides down it? e. The hill has a river at the bottom, that causes two things. First is a vertical drop of 2m, second is a horizontal gap. What distance is the gap if Timmy makes the jump? Here you may also assume that at the bottom of the hill Timmy flies horizontally off.
- A spring is used to launch a box along the frictionless track shown below. The spring constant is 345 N/m and the spring is initially compressed by 15.6 cm. The mass of the box is 80.8 g. Point Z is 46.4 cm vertically below the launch point. a. What is the potential energy held in the spring before it is launched? J b. Using Conservation of Energy, what is the speed of the box as it passes point Z? m/sWhat is the answer to question 1 c and question 2You take a 13kg bag of lead pellets and drop it from 2m above the ground.a. How much gravitational potential energy does the bag have when held 2m above the ground?b. The bag is dropped. Just before it hits the ground, how much kinetic energy does it have?c. How fast is the bag moving just before it hits the ground?d. When it hits the ground, the kinetic energy will be transformed mostly into thermal energy. If 40%of this energy goes into the lead pellets as heat, what will be the increase in temperature of thelead? Assume led has a specific heat capacity of 160J/kg·K.
- A 101-kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope 1.8 m higher than ground level shown in the following figure. a. If the skier coasts up the hill, what is his speed when he reaches the top plateau? Assume friction between the snow and skis is negligible. b. What is his speed when he reaches the upper level if an 80-N frictional force acts on the skis?2. A 3.2 kg ball that is moving straight upward has 17 J of kinetic energy and its total mechanical energy is 25 1. a. Find the gravitational potential energy of the ball. b. What is its height above the ground? c. What is the speed of the ball? d. What will be its gravitational energy when it is at Its highest point above the ground? e. What is the maximum height above the ground? f. What will be its speed Just before it lands on the ground? and Given: quired: ution:6. At the moment when a bodybuilder throws a 10.0kg medicine ball, it is exactly 2.0m above the ground and traveling at 5.0 m/s. It reaches a maximum height of 3.0m above the ground and then falls to the ground. Assume that air resistance is negligible. a. What is the potential energy of the ball as it leaves the hands relative to the ground? b. What is the kinetic energy of the ball as it leaves the hands? c. What is the total mechanical energy (kinetic plus potential) of the ball as it left the hands? 1.200 d. What is the total mechanical energy of the shot JUST as it reaches its maximum height? e. What is the potential energy of the shot just as it reaches its maximum height? f. What is the kinetic energy of the shot just as it reaches its maximum height?