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- A 25.0kg shell is fired from a 2100 kg cannon with a velocity of 500. m/s. what is the resulting velocity of the cannon?A 12-kg hammer strikes a nail at a velocity of 7.5 m/s and comes to rest in a time interval of 8.0 ms. What is the impulsive given to the nail?What is the force applied to a ball if the momentum increase by 1.91kgm/s every 3.67s?
- A rocket has a total AV of 7,39 km/s with an exhaust velocity of 3.50 km/s, what is the ratio of the rocket's initial mass (full of fuel) to its final mass (empty)?Calculate the force exerted on a rocket, given that the propelling gases are expelled at a rate of 1000 kg/s with a speed of 60,000 m/s (at take off)A diver with a weight of 833 N dives from a boat with a mass of 375kg. If he leaves the boat with a velocity of 2.25m/s [W] after acceleratinf for 0.50s, what will be the final velocity of the boat?
- What is meant by muzzle velocity and recoil velocity?A gun whose mass is 2.7 kg fires a bullet of mass 20 grams at a speed of 250 m/s. Compute the recoil velocity of the gun.A rocket takes off from Earth and reaches a speed of 100 m/s in 10.0 s. If the exhaust speed is 1500 m/s and the mass of fuel burned is 100 kg, what was the initial mass of the rocket?
- When a 400kg car traveling att 30 m/s rear ends,colliding in elastic ally with an 800 kg truck traveling at 10 m/s,what is the final velocity of the vehicles after the crash.A 75 kg block moves with a velocity of 7 m/s and moves for 5 seconds from rest, if the coefficient of friction is uk=0.3, find the magnitude of the force P. (Use momentum and linear impulse)A sonar transmitter operates at 2 impulse per second. if the device is held to the surface of fresh water (Eb=2.04E9 Pa) and the echo is received midway between impulses , how deep is the water in meter?