. A ball is thrown straight up. Neglecting air resistance, whichstatement is not true regarding the energy of the ball?(a) The potential energy decreases while the ball is goingup.(b) The kinetic energy decreases while the ball is goingup.(c) The sum of the kinetic energy and potential energy isconstant.(d) The potential energy decreases when the ball iscoming down.(e) The kinetic energy increases when the ball is comingdown.

Q: If the potential energy of an object at a certain height is 200 J and it falls, then what would its…

A: Given in question - Potential energy at height (P.E) = 200 J To find - What would be its kinetic…

Q: How fast must be the 4.0 kg basketball thrown upward to achieve the same potential energy of 160 J?

A: Given: The mass of the object is 4 kg. The potential energy of the object is 160 J.

Q: A 261 kg ball from a demolition machine is propelled sideways until it is 4.83 m above its lowest…

A: Given : Mass of a ball (m) = 261 kg Height (h) = 4.83 m

Q: Suppose 65 passengers with an average mass of 75kg are transported by a ski lift to a height of…

A: Given: The number of passengers: n = 65. The average mass of a passenger: m = 75 kg. The height…

Q: A mass of 20 kg is at a height of 8 m above the ground. Then the potential energy possessed by the…

A: Given:- mass of object is 20 kg  height above the ground is 8 m  Find:- potential energy?

Q: Is it possible to increase the kinetic energy without the application of external force?

A: yes the kinetic energy will increase without applying any external force. for example, when we kept…

Q: Cite an example in which a force is exerted on an object without doing work on the object.

A: The work done will be zero when the applied force on an object is perpendicular to the displacement…

Q: From what height would an automobile have to fall to gain the kinetic energy equivalent to what it…

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Q: Find the potential energy gained by a body of mass 60 kg, if it is raised by 12 m. (use g = 10 m/s2)…

A: Potential energy is defined as the product of mass, gravitational acceleration and height. PE = mgh

Q: A car with a mass of 900.0 kg climbs a 20.00° incline at a steady speed of 60.00 km/hr. If the total…

A: The steady speed of a car is, v=60 km/hr=16.67 m/s The total resistive or dissipative force acting…

Q: If A 29-kg child starts from rest and slides down a slide that is 2.6 m high. At the bottom of the…

A: Given parameters :  Mass "m"= 29kg  Height "h"= 2.6m  Final Velocity "v"= 2.5m/s .   Concept :…

Q: A 135g Frisbee is thrown from a point 1.05 m above the ground with a speed of 12.00 m/s. When it has…

A: Given m=135g H1=1.05m H2=2.50m V1=12.00m/s V2=10.4831m/s   Work done on the Frisbee can be defined…

Q: A race car travelling on a straight and flat stretch of track must overcome 1.5 kN of resistance to…

A: Given : F = 1.5 kN = 1.5 x 103 N v = 190 km/hr = 190 x 1000/3600 = 52.78 m/s

Q: An applied force of 14.6 N acts on a 2.50 kg mass that is initially at rest. Over a distance of 2.36…

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Q: See image attached. Thanks!

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Q: How much work (in J) is required to move a box that weighs 13 kg upward by 65 cm? Use the fact that…

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Q: If the mass of the swimmer is 50kg. a. Potential Energy at the Top is = J b. Velocity of the swimmer…

A: We have a swimmer of mass m=50 kg drop (initial velocity u=0) from a height of h=15 m. We need to…

Q: A 3.0-kg rock is dropped from a height of 18.0 m. At what height is the rock's kinetic energy twice…

A: Given Data : The mass of the rock is given as m = 3.0Kg.  The height of the rock is given as H=…

Q: Calculate the average power necessary for a 55.8 kg person to run up a 5.0 m high, sloped hill, in…

A: The expression for the average power is P=Wt Here,P  is the average power,  iWs the work done by…

Q: A baseball of mass 350 g is hit at home plate with a speed of 50 m/s. When it lands in a seat in the…

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Q: A rock falls from a vertical cliff that is 4.0 m tall and experiences no significant air resistance…

A: It is given that,

Q: An applied force of 14.4 N acts on a 2.50 kg mass that is initially at rest. Over a distance of 2.35…

A:

Q: An object is sliding down a frictionless incline of angle 48.8 degree. Given the potential energy of…

A: Given info: Angle of inclination, θ=48.8° Potential energy of the object at the top, P.E=7.73 J…

Q: An object is thrown vertically upward with an initial kinetic energy of 4000 J from the level where…

A: Given information: The initial Kinetic energy (KE) = 4000 J The initial Potential energy (PE) = 6000…

Q: An object is dropped from a height of 26 m. At what height will it’s kinetic energy and it’s…

A: Answer Given Height h = 26 m

Q: Suppose a 825-kg car can produce a useful power output of 45.5 hp (1 hp = 746 W). How long, in…

A: a)Calculate the work done using work energy theorem.

Q: Suppose a 975-kg car can produce a useful power output of 42.5 hp (1 hp = 746 W). How long, in…

A: Data Given ,  Mass of the car ( m ) = 975 kg Power of the car ( P ) = 42.5 hp   = ( 42.5 × 746 ) W =…

Q: In the future above, a box of mass 2.5kg is initially at rest on a rough inclined plane.  Assuming…

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Q: How high must a 20 kg box be lifted to give it 784J of potential energy?

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Q: When a driver applies brakes to keep a car going downhill at constant speed and constant kinetic…

A: In the given case, the car is moving with a constant speed and constant kinetic energy. The…

Q: that

A: Given, Mass(M)=13 kg. Displacement=65 cm=65/100 m=0.65 m. g=9.8 m/s²

Q: a mass of 0.1420 kg and has this speed just before a batter makes contact with it, how much kinetic…

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Q: Consider a compact car that is being driven at 88 km/h. The acceleration of gravity is 9.8 m/s. From…

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Q: The horizontal and vertical velocity components of a 2.0 Kg projectile are Vh = 30 m/s and Vv = 40…

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Q: 1) A5 kg object is moving downward at a velocity of 12 m/s and is currently 2.6 meters above the…

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Q: How much work (in J) is required to move a box that weighs 18 kg upward by 35 cm? Use the fact that…

A: Given, Mass  of the box m = 18 Kg Upward distance h = 35 cm = 0.35 m Acceleration due to gravity g =…

Q: A box of mass 20.0 [kg] slides down from the top of a surface inclined at 50.0º with height of 10.0…

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