A frog jumps upward from the ground.  During the jump, he contacts the ground for the initial 2.5cm and then reaches a height of 50cm.  The frog weight 0.147N Question:  What is the kinetic energy and velocity of the frog, just after take-off.

Q: A bride tosses a bouquet of flower through the air with a speed of 2.4 m/s, and it smacks one of her…

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Q: The first car has twice the mass of a second car, but only half as much kinetic energy. When both…

A: Let , The first car mass = m1 second car mass = m2 Kinetic energy of 1st car = K1 Kinetic energy of…

Q: Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.…

A: Write the given values with the suitable variables. W=20 Nh=5 m Here, W is the weight of the box and…

Q: You push a file cabinet up a frictionless ramp tilted at 10°with horizontal. The file cabinet has a…

A: KEi=12x 100 x 22    =200 JWall=∆KEWg+WF+WN=∆KE

Q: A 4 kg ball falls from height of 23 m. What willbe potential energy of the ball after 0.8 second?…

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Q: A man slides down a pole and reaches the ground after falling a distance h = 15 m. His  potential…

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Q: A 65.0-kg file cabinet of is sliding down a rough ramp for a distance of 5.00 m as shown. The…

A: To solve the problem we will use work-energy theorem. Given Data Mass of the cabinet is m=65.0 kg…

Q: Adisa pulls a 35.0-N crate up a 4.00-m-long inclined plane at a constant velocity. If the plane is…

A: Given: Weight of crate = 35.0 N. Length of inclined plane = 4 m. Angle of Inclined plane = 39.0 ̊.…

Q: A cyclist in a race must climb a 5° hill at a speed of 8 m/s. If the mass of the bike and the biker…

A: Given that-Mass of the bike and biker,m=80 kgSpeed of the bikerSlope, θ=5°

Q: A crane lifts a 320 kg crate up a height of 4.5 m. The crane has a power rating of 2000 W. How much…

A: Given data The mass of the crate is given as m = 320 kg. The height up to which the crate lifts is…

Q: A 1622 kg car has a speed of 11 m/s when it hits a tree. The tree doesn’t move and the car comes to…

A: The kinetic energy of the car before the collision is given as, The kinetic energy of the car after…

Q: The acceleration of a 2.00 kg object is shown below.  If as=6.0 m/s2, and the object starts from…

A: Given, Acceleration vs distance graph

Q: A brick lies perilously close to the edge of the flat roof of a building. The roof edge is 50 ft…

A: The potential energy of a mass M at a height h above the ground is given by, U = Mgh Where, g = 32.2…

Q: This is high school physics. Topic: Energy Conservation An unknown force is applied to a 8.0 kg…

A: Given that, Mass (m)= 8 kg Displacement (s)= 15 m Initial speed (u)= 10 m/s Final speed (v)= 20 m/s…

Q: A 520-kg dragster accelerates from rest to a final speed of 105 m/s in 390 m, during which it…

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Q: Quick Start: A car accelerates from 0 to 43.2 m/s in 4.67 s. The mass of the car is 2.04e+03 kg. (a)…

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Q: A 4 kg ball falls from height of 23 m. What willbe potential energy of the ball after 0.8 second?…

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Q: A ball is released from a height of 11 mand weighs 83 N. What is the magnitude of the total change…

A: The change in gravitational potential energy with change in height from ground can be expressed as;…

Q: A 67.1 kg runner has a speed of 5.30 m/s at one instant during a long-distance event. a.) What is…

A: (a) Calculate the runner's kinetic energy at this instant. KE=12×Mass of runnerm×Speed of the…

Q: 34 Which of the following is ALWAYS true regarding the law of conservation of energy? a. Potential…

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Q: scooter, with the engine on, down a 19-m-long ramp that starts at a height of 2.5 m. Her speed is…

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Q: Adam drove a bike 1260 m with an average speed of 115m/s. Suppose he applied the brakes to reduce…

A: According to the work-energy theorem, the work done by the brakes will be equal to the change in…

Q: A 3 kg ball falls from height of 14 m. What willbe potential energy of the ball after 1 second?  Use…

A: given data,  mass of the ball , m = 3 kg initial height , h = 14 m  gravitational acceleration , g =…

Q: A bowling ball with mass of 3.93.9 kg falls off a shelf 4.64.6 m above the ground. Assuming a…

A: mass of ball (m) = 3.93 kg height (h) = 4.64 m

Q: A running 53-kg cheetah has a top speed of 28 m/s. (a) What is the cheetah's maximum kinetic energy?…

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Q: A frog jumps straight up at 0.7 m/s from 0.6 m above ground. How fast is it after it is about to…

A: Initial velocity = u = 0.7 m/s Initial height = h = 0.6 m Final height below the ground = h' = 0.8 m…

Q: A bride tosses a bouquet of flower through the air with a speed of 1.8 m/s, and it smacks one of her…

A: Mass of bouquet is Speed is Note:Find:Kinetic energy of bouquet.

Q: An athlete with a mass of 63.0 kg is in a cross country race, and at one instant he has a speed of…

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Q: There is a 100 kg box that starts at rest. a person pushes that box over the course of 18 meters…

A: Given mass of box m = 100 kg initial speed u = 0 m/s final speed v = 10 m/s displacement x = 18 m…

Q: A bicycle and rider going 12 m/s approach a hill. Their total mass is 57 kg. (a) What is their…

A: Given Data : speed of the rider, v = 12 m/s total Mass of the rider and the bicycle, m = 57 kg Since…

Q: A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a…

A: The problem is based on the concept of power. Power is the rate of doing work. To solve this, we…

Q: A 2.5 kg piece of wood falls onto a carpenter’s table from a height of 2.0 m above the table. T/I…

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Q: A box with a mass of 7.0kg is lifted very slowly (with essentially zero acceleration), though a…

A: The height from where box falls is, h=1.5 m The initial velocity of the box at the top is, u=0 m/s