A rock is dropped from rest from a height h above the ground. It falls and hits the ground with a speed of 11 m/s. From what height should the rock be dropped so that its speed on hitting the ground is 22 m/s? Neglect air resistance.

Q: A 73.0-kg skier starts from rest from the top of a 49-m high slope. What is the speed of the skier…

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Q: The drawing shows a skateboarder moving at 7.00 m/s along a horizontal section of a track that is…

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Q: You drop a 2.80 kg book to a friend who stands on the ground at distance D = 14.0 m below. Your…

A: Given, Mass of book = 2.80 kgheight of drop, D= 14.0 mheight of person, d=1.30 minitial speed = 2.30…

Q: Malar is playing with a toy car and track set. She has assembled the track so that it contains a…

A: Given, Height at which the car started,  h=137 cm=1.37 m The mass of the car,  m=64 g=0.064 Kg Speed…

Q: Problem One. A daredevil on a motorcycle leaves the end of a ramp with a speed of 25.0 m/s. If his…

A: Given initial speed u=25m/s and speed at highest point is vh=18m/s. Let's assume the maximum hight…

Q: A roller coaster at the top of a 65.2m tall hill with a speed of 0 m/s. What is its speed in m/s…

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Q: A proton (mass m = 1.67 x 10-27 kg) is being accelerated along a straight line at 1.10 × 1012 m/s²…

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Q: A proton (mass m = 1.67 x 1027 kg) is being accelerated along a straight line at 4.60 x 1010 m/s in…

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Q: A 274-gram ball is thrown at a speed of 39.4 m/s from the top of a 42.6-m high cliff. Determine the…

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Q: 71.0-kg skier starts from rest from the top of a 55-m high slope.  What is the speed of the skier on…

A: Given: The mass of the skier is 71 kg. The height of the skier is 55 m. The initial speed of the…

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: To solve this problem, we need to use conservation of energy. The total mechanical energy of the…

Q: A 59 kg skier pushes off the top of a frictionless hill with an intial speed of 3.6 m/s How fast…

A: Solution:   As per the given data,   Mass(m)=59 kg Initial speed(u)=3.6 m/s height(h)=8 m

Q: A 14 kg penguin slides on its belly down an icy, frictionless glacier. If the penguin started from…

A: Write the given values of the problem- Mass=14 kg final speed(vf) vf=14 m/s

Q: A 36.3-kg child starting from rest slides down a water slide with a vertical height of 12.0 m.…

A: Given data: Mass of the child (m) =36.3 kg Vertical height (h) = 12 m Need to determine the Childs's…

Q: A stone, M = 1 kg is projected from a point, h= 15 m above the ground with an initial speed, v, = 10…

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Q: A 230-gram ball is thrown at a speed of 40.7 m/s from the top of a 45.1-m high cliff. Determine the…

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Q: A cart travels along a frictionless roller coaster track. At point A, the cart is10 m above the…

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Q: A roller coaster car is approaching the top of a hill with a speed of 7.1 m/s.  The top of the hill…

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Q: A small block moves at point A with a speed of 6 m/s. Its path is without friction until it reaches…

A: Solution:   Given Values,   Point A speed vA=6 m/s Length(L)=8.6 m Coefficient of friction μ=0.65…

Q: You drop a 1.50 kg book to a friend who stands on the ground at distance D= 12.0 m below. Your…

A: Given: D=12.0 m d = 1.80m m = 1.5kg

Q: A roller coaster is moving at 22 m/s at the top of the first hill (h= 47 m). Ignoring friction and…

A: The given roller coaster moves at a speed of 22 m/s when it is at the top of the first hill, at a…

Q: A skater skates down a frictionless ramp from a height of 5.0 m. What is his speed at the bottom of…

A: To determine the skater's speed at the bottom of the ramp, we can use the conservation of mechanical…

Q: A cyclist coasts up a 12.1° slope, traveling 16.0 m along the road to the top of the hill. If the…

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Q: A 79.0-kg skier starts from rest from the top of a 50-m high slope. What is the speed of the skier…

A: Givenheight, h=50 mmass, m=79 kginitial speed, u=0we can use conservation of mechanical energy here…

Q: Two blocks are connected by a light string that passes over a frictionless pulley as in the figure…

A: First draw the free body diagram and solve for acceleration .  Then, using acceleration and height ,…

Q: A kid on a bike goes from the bottom to the top of a 25 m hill. What minimum speed would the kid…

A: h=25 m.

Q: If he leaves the ramp with a speed of 29.5 m/s and has a speed of 27.7 m/s at the top of his…

A: Useful formula: Kinetic energy of an object with mass M & speed v is Ek=12Mv2       ...(1)…

Q: At the Earth's surface, a projectile is launched straight up at a speed of 6.3 km/s. To what height…

A: Given data The speed of the projectile is u = 6.3 km/s = 6300 m/s   The expression for energy…

Q: A box slides from rest down a frictionless ramp inclined at 31.0° with respect to the horizontal and…

A: Given: Inclination angle is θ=31° Initially object is at rest on the top of ramp and then it slides…

Q: e by side, two round objects are released from the top building, object 1 is released from rest,…

A: Given:-  Let the two objects 1 is  A and objects 2 is B then given  uA=0 , vA=4 m/s vB=3 m/s  Find:-…

Q: Your answer is partially correct. A proton (mass m = 1.67 x 10-27 kg) is being accelerated along a…

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Q: A 53.0-kg skier starts from rest from the top of a 65-m high slope.  What is the speed of the skier…

A: In the given question We have to determine the speed of the skier on reaching the bottom.

Q: A small block slides down a frictionless track whose shape is described by x>0, The value of d is…

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Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

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Q: A 104 kg man is skiing across level ground at a speed of 8.3 m/s when he comes to the small slope…

A: Given that,                     initial velocity(vi)=8.3m/s                     mass of man(m)=104kg…

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: given      y=x2d for x<0      y=-x2d for x>0     d=2.33     initial velocity of block =0m/s…

Q: 33.6-kg child starting from rest slides down a water slide with a vertical height of 14.0 m.…

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Q: At what speed does the crate reach the bottom of the inclined plane?

A: Analyze the following diagram. The plane’s height can be represented as, Substitute the relevant…

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

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Q: A skier is sliding downhill at 7 m/s when she reaches an icy patch on which her skis move freely…

A: Details Given: v1= 7m/s h = 9m g = 9.8m/s2

Q: You drop a 1.40 kg book to a friend who stands on the ground at distance D = 13.0 m below. Your…

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Q: An object is thrown up from the height h0 with the speed 20 m/s. If the maximum height that the…

A: Given data The initial height is ho The maximum height is h1=30 m The initial speed is u=20 m/s The…

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: Given values: Equation of y, y=x2d           for x<0y=-x2d       for x>0 Value for d = 2.10 m…

Q: A 0.1 kg apple hits the ground with a speed of 17 m/s. From what height was the apple dropped? I am…

A: Given  Mass(m) = 0.1 kg  Speed at the ground (v) = 17 m/s  Let , initial height of apple is 'h' .…

Q: A 297-gram ball is thrown at a speed of 43.9 m/s from the top of a 41.1-m high cliff. Determine the…

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