Recent content by chemie726283

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    Physics rifle problem -- Forces and acceleration of the bullet

    Homework Statement A rifle bullet of mass 10g is fired and takes 2.0 ms to travel down the rifle barrel of length 0.50m with constant acceleration Calculate the muzzle velocity (bullet velocity on leaving the barrel) Calculate the acceleration in the barrel After traveling a short distance...
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    Motion problem: motorist's braking time including reaction time

    Homework Statement A motorist is traveling at 10m/s in a car whose maximum deceleration rate is 5.0 m/s^2 The effective reaction time between seeing a hazard and starting to brake is 0.5s Calculate the thinking distance for the drover ar this speed (ie the distance traveled during his...
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    Raindrop free falling -- calculate the velocity and time

    Homework Statement Raindrops fall from a broken gutter at 1.0 s intervals to the ground , 19.6 m below Neglecting air resistance and taking g as 9.81 calculate the time for each drop to reach the ground velocity of the drops as they reach the ground speed of drop at the height of 14.7 m I...