مسائل فيزيائية استصعبت علي .. مساعدة

[ريم الفلاسي]

السؤال الاول :
What is the kinetic energy of a 5 kg mass moving at 5 m/s ?

السؤال الثاني :
An object with weight 5Kg is freely falling form 10 meters height.
¡What is the Potential energy of that object?



¡How much force is applied on that object?


السؤال الثالث :

How much force is needed to accelerate a 700 kg car 2 m/s2


السؤال الرابع :

What acceleration will result when a 200 N net force applied to a 25 kg object?


السؤال الخامس :
A net force of 8 N causes a mass to accelerate at a rate of 3 m/s2. Determine the mass.


السؤال السادس :
A 100 kg roller coaster is released from position "A" with an initial speed of 30 m/s. The designer of the roller coaster wants the cart to come to a complete stop at point "B". How high must point "B" be above the ground? (use g = 9.8 m/s2)



السؤال السابع :
A car of mass 1100 Kg drives with a velocity such that it has a kinetic energy of 400 kJ ( see the Figure). Find the velocity. If the car is raised with a carne how high should it be lifted in the standard gravitational field (9.81 m/s2) to have a potential energy that equals the kinetic energy?

[المدهش62]

el so2al el 2awal FK = 25
el ba2y mesh 3arfo ^_^'

[المدهش62]

el so2al el 5ames m = 2.67 Kg
el so2al elrabe3 a = 8 m/s2
el so2al eltalet F = 1400 N

[TFJEER]

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شوهالاسأله ؟


بالانقليزي ليش ؟

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