- A ball is projected from the ground at an angle of 45° with the horizontal surface. It reaches a maximum height of 120 m and returns to the ground. Upon hitting the ground for the first time, it loses half of its kinetic energy. Immediately after the bounce, the velocity of the ball makes an angle of 30° with the horizontal surface. The maximum height it reaches after the bounce, in metres, is ...........

Q: A new generation of pogo sticks lets a rider bounce more than 2 meters off the ground by using…

A: New generation of pogo sticks lets a rider bounce more than 2 meters off the ground by using elastic…

Q: 7) A 12 kg box is at rest at the top of a ramp (point A). The length of the ramp is 8.0 m long, and…

A:

Q: B/ A tennis of mass 59 g is thrown vertically upwards with an initial velocity of 200 km/hr.…

A: Given : m = 59 g = 0.059 kg vi = 200 km/hr = 200(1000/3600) = 55.56 m/s

Q: A simple pendulum 1 metre long has a bob of 10 kg. If the pendulum swings from a horizontal…

A: Answer:-  Given  Mass of the Bob(m) = 10 kg  Height (h) = 1 m  Acceleration due to gravity (g) = 9.8…

Q: A pogo stick has a spring with a force constant of 2.50 × 104 N/m , which can be compressed 10.4 cm.…

A: M= 38 kg  K= 2.5× 104 N/m  x= 10.4 cm = 0.104 m

Q: 5.) A skydiver, mass 60 kg, jumps out of an airplane traveling 65 m/s horizontally at an altitude of…

A: Work energy theorem will be applied here.

Q: (a) A 200-kg swordfish swimming at 5 m/s rams a wooden yacht that is at rest. It’s a sword…

A:

Q: Two blocks, of masses M = 1.6 kg and 2M, are connected to a spring of spring constant k = 240 N/m…

A: Given that, The mass of the block which is on the plane is m1=M=1.6kg The mass of the hanging block…

Q: 21. A 2 kg projectile is fired from ground level at an angle fo with a kinetic energy K-200 J. If…

A: Given value--- mass = 2 kg. initial kinetic energy = 200 J. at highest point kinetic energy = 140…

Q: Can we ignore the kinetic energy of the Earth when considering the energy of a system consisting of…

A: Consider a ball dropping at the surface of the earth. By Newton’s third law, however, the earth will…

Q: If the ball can reach a maximum height of 0.75 meters, what will be the velocity of the ball when it…

A: Given: The maximum height reached is 0.75 m. The height of the above the ground is 0.20 m.

Q: An Olympic swimmer stands on top of a platform at a height H above a swimming pool. At the moment of…

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Q: Two blocks, of masses M = 1.5 kg and 2M, are connected to a spring of spring constant k = 230 N/m…

A:

Q: A train moves along the tracks at a constant speed u. A woman on the train throws a ball of mass m…

A: Given, The velocity of the train with respect to the ground is u The velocity of the ball with…

Q: 7) A 12 kg box is at rest at the top of a ramp (point A). The length of the ramp is 8.0 m long, and…

A:

Q: A 5-kg projectile is fired over level ground with a velocity of 200 m/s at an angle of 25°above the…

A:

Q: A body of mass 0.2 kg falls from a height of 10m to a height of 6m above the ground. Find the loss…

A:

Q: What is the total mechanical energy of falling baseball from the highest of 4 m, 3.22 m .25 m? For…

A: Given, Weight of baseball, m=0.3 kg acceleration due to gravity, g=10 m/s2 Height of the baseball,…

Q: A 75-kg skier starts from rest at the top of a hill that makes an angle of 35◦ below the horizontal.…

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Q: An object with mass of 10 kg is dropped from a height of 20 m from the ground. Assuming only the…

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Q: 3) We want to get a spacecraft with a mass of 6.70 x 10² kg to a distance of 1.10 × 10⁹ m away from…

A: Given that:Radius of Earth, RE=6.37×103 km=6.37×106 mMass of Earth, ME=5.97×1024  kgMass of space…

Q: 3. A projectile of mass 2.00 kg is propelled from ground level with kinetic energy 450 J. At the…

A: Write the given values with the suitable variables. m=2 kgK1=450 JK2=250 Jg=10 m/s2 Here, m, K1, K2,…

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…

A:

Q: we have a mass, m, situated at a height, h, above an ideal spring with force constant k.  The mass…

A: At the highest and lowest position of the spring, the velocity of the mass is zero, thus initial and…

Q: Pick out the only vector quantity in the following list:  Temperature, pressure, impulse, time,…

A: Impulse

Q: A sledgehammer of mass m = 1.1 kg falls freely vertically downward from a height of h = 2.8 m at an…

A: By conservation of energy mgh+1/2mv2=1/2mVf2 Also F=ma

Q: A roller coaster design is presented to you where the maximum speed of the car will be 9.00 meters…

A: according to the conservation of energy, the total mechanical energy at the lowest point of the…

Q: I need help with this problem and an explanation for the solution described below. (University…

A: