مهندسة ادارية
08-05-2007, 19:37
السلام عليكم ورحمة الله وبركاااااااته
كيفكم اخوتي في الله ؟
الله يخليكم جاوبوني على هذه الاسئلة ضرووووري :) ...هي سهلة وبسيطة بعرف...بس يعني انا ما شاء الله علي:cool: توووووب بالفيزيا.....فالله يخليكم حلووولي هالاسئلة بسرعة واللي عنده حلول من كتاب سير واي) يقول لنا ..لانو هذه الاسئلة من serway jewett
1) in a local bar, a customer slides an empty beer mug down the counter for a refill. The bartender is momentarily distracted and does not see the mug, which slides off the counter and strikes the floor 1.40m from the base of the counter. If the height of the counter is 0.860m, a)with what velocity did the mug leave the counter and b) what was the direction of the mug's velocity just before it hit the floor?
2) a soccer player kicks a rock horizontally off a 40.0m high cliff into a pool of water. if the player hears the sound of the splash 3.00s later, what was the initial speed given to the rock?Assume the speed of sound in air to be 343m/s
3) how long does it take an automobile traveling in the left lane at 60.0 km/h to pull alongside a car traveling in the same direction in the right lane at 40.0 km/h if the cars' front bumpers are initially 100 m apart.
4) how can you throw a projectile so that it has zero speed at the top of its trajectory ? so it has nonzero speed at the top of its trajectory?
5) Heather in her Corvette accelerates at the rate of (3.00i+ 2.00J), while Jill in her Jaguar accelerates at (1.00i+3.00J). they both start from rest at the origin of an xy coordinate system. After 5.00 s a) what is Heather's speed with respect to Jill b)how far apart are they? And c)what is Heather's acceleration relative to Jill?
كيفكم اخوتي في الله ؟
الله يخليكم جاوبوني على هذه الاسئلة ضرووووري :) ...هي سهلة وبسيطة بعرف...بس يعني انا ما شاء الله علي:cool: توووووب بالفيزيا.....فالله يخليكم حلووولي هالاسئلة بسرعة واللي عنده حلول من كتاب سير واي) يقول لنا ..لانو هذه الاسئلة من serway jewett
1) in a local bar, a customer slides an empty beer mug down the counter for a refill. The bartender is momentarily distracted and does not see the mug, which slides off the counter and strikes the floor 1.40m from the base of the counter. If the height of the counter is 0.860m, a)with what velocity did the mug leave the counter and b) what was the direction of the mug's velocity just before it hit the floor?
2) a soccer player kicks a rock horizontally off a 40.0m high cliff into a pool of water. if the player hears the sound of the splash 3.00s later, what was the initial speed given to the rock?Assume the speed of sound in air to be 343m/s
3) how long does it take an automobile traveling in the left lane at 60.0 km/h to pull alongside a car traveling in the same direction in the right lane at 40.0 km/h if the cars' front bumpers are initially 100 m apart.
4) how can you throw a projectile so that it has zero speed at the top of its trajectory ? so it has nonzero speed at the top of its trajectory?
5) Heather in her Corvette accelerates at the rate of (3.00i+ 2.00J), while Jill in her Jaguar accelerates at (1.00i+3.00J). they both start from rest at the origin of an xy coordinate system. After 5.00 s a) what is Heather's speed with respect to Jill b)how far apart are they? And c)what is Heather's acceleration relative to Jill?