[الثانوي]

السلام عليكم ورحمة الله وبركاته::
كوني طالبة فيزياء حبيت احط بعض الأسئلة ،حتى نستفيد ونفيد ... الاسئلة اسئلة عامة وبعضها يحتاج لتفكير دقيق.مجاال الاسئلة (المتجهات).والاسئلة بالنجلش مثل ما حصلتها عاد لا احد يقول ليش مب بالعربي اظن الكل
أو الاغلب يقدر يفهم الأسئلة .. وهاي البداية وان شاء الله بتكون في مشاركات كثيرة ...... فاتمنى اننا نتعاون ونتساعد
<<< وبلا طولة كلام هذول الاسئلة




# one car travels due to east at 40km/h m and a second car travels north at 40 km/h .Are their velocities equal? Explain.

##can you give several examples of an object's motion in which a great distance is traveled but the displacement is zero?

###Can the displacement vector for a particle moving in two dimensions ever be longer than the length of path traveled by the particle over the same interval? Can it ever be less? Discuss

####during baseball practice, a batter hits a very high fly ball and then runs in a straight line and catches it.Which had the grater displacement the batter or the ball?

##### if V = V1+V2 (مع وجود اشارة المتجه على كل V)
is V necessarily greater than V1 and/or V2 ?discuss.

$ two vectors have length V1=3,5Km and V2=4km. what are the maximum and minimum magnitudes of their vector sum?

$$ Can two vectors of unequal magnitudes add up to give the zero vector? Can three unequal vectors? under what conditions?

$$$can the magnitude of a vector ever(a) be equal to one of its components? Or b)be less than one of its components?

$$$$ can a particle with constant speed be accelerating? What if it has constant velocity?

$$$$$ a child wishes to determine the speed a slingshot imparts to a rock. How can this be done using only a meter stick, a rock, and the slingshot?
*it was reported in World War 1 that a pilot flying at an altitude of 2 km caught in his bare hands a bullet fired at the plane! Using the fact that a bullet slows down considerably due to air resistance,explane how this incident occurred.


**at some amusement parks,to get on a moving (car) the riders first hop onto a moving walkway and then onto the cars themselves. Why is this done?


*** if you are riding on a train that speeds past another train moving in the same direction on an adjacent track, it appears that the other train is moving backward. why?

**** if you stand motionless under an umbrella in a rainstorm where the drops fall vertically, you remain relatively dry. However , if you start running the rain begins to hit your legs even if they remain under the umbrella. Why?

***** a person sitting in an enclosed train car,moving at a constant velocity, throws a ball straight up into the air in her reference frame.a)where does the ball land? What is your answer if the car B)accelerates, c) decelerates d)rounds a curve , e)moves with constant velocity but is open to the air?


^two rowers, who can row at the same speed in still water set off across a river at the same time . one heads straight across and is pulled downstream somewhat by the current. The other one heads upstream at an angle so as to arrive at a point opposite the staring point. Which rower reaches the opposite side first?


^^ how do you think a baseball player "judges" the flight of a fly ball?which equation in this chapter becomes part of the player's intuition?

^^^in archery, should the arrow be aimed directly at the target ?how should your angle of aim depend on the distance to the target?

^^^^ a projectile is launched at an angle of 30 degree to the horizontal with a speed of 30m/s. how does the horizontal component of its velocity 1.0s after launch compare with its horizontal component of velocity 2.0after launch?

^^^^^ two cannonballs ,A and B ,are fired from the ground with identical initial speed, but with (angel A) larger than (angel B). A)which cannonball reaches a higher elevation ?b)which stays longer in the air? C)which travels farther?