[طالب السنة التحضيرية]

بسم الله الرحمن الرحيم
السلام عليكم ورحمة الله وبركاته
انا امس نزلت كم سوال والحمد لله ساعدني الاخ هشام الخطاب في حلعها والحين باقي ستة بس
ان شاء الله يساعدني كمان

السوال الاول
A teenis ball travels the full length of the court, 24 meters, in 0.5 second. what is its average speed


السوال الثاني


A 5-kg flower-vase, accidentally falls from the balcony of a high builiding , resches apile of sand on the ground in 3 seconds

a)neglecting air resistance, what is the vase,s speed when it hits the sand

b) what is the vase,s average speed over the 3 seconds

c)what is the height of the balcony above ground



السوال الثالث
A horizontal force of 100 n pushes a box across a flower at a constant speed
a(what is the net force acting of the box
b)what is the force of friction on the box

مشكورين مقدما

[Einstein Uae]

i will answer Q:1 for u and give u hints for other two questions.

Question 1

Average Speed = Distance / Time = 24 / 0.5 = 48 m/s



Question 2

for part a)

when any object reaches its maximum hieght then the velocity is zero.

for part b )

as i told you before that average speed is equal to the distance travelled divided by the time taken.


part c )

use the free fall equation to find out the hieght of the building.


Question 3


for part a ) to find the net force you have to know all the forces that are acting on the box , you have the horizontal force given , you have the frictional force that is directed to the opposite direction of box's movement and finally you have the wight of the box directed downwards .
add up all these forces together to get the net force.


part b ) you found it in part a right check it.

[هنـــــــودة ^_^]

الله يعينك ويوفقك أتوقع انشسناين كالعاده ماقصر