اختبار إلكتروني: Conservation of Momentum

يتناول هذا الاختبار مفاهيم حفظ الزخم والدفع في الفيزياء، من خلال مسائل تطبيقية على التصادمات المرنة وغير المرنة. تتضمن الأسئلة حساب السرعات النهائية للأجسام المتصادمة مثل كرات البلياردو، لاعبي كرة القدم، والمركبات، مع التركيز على العلاقة بين الكتلة والسرعة المتجهة قبل التصادم وبعده، وكيفية حساب الدفع الناتج عن قوة مؤثرة على جسم لفترة زمنية.

Question 1

Points: 1

While playing pool, the white cue ball strikes the 8 ball. Before the collision, the cue ball's velocity was 10 m/s and the 8 ball was at rest. If both ball's have a mass of 0.15 kg and the cue ball's velocity after the collision is 2 m/s, what is the 8 ball's velocity?

Question 2

Points: 1

In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other. The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1 m/s. The carts stick together when they collide. Calculate their final speed.

Question 3

Points: 1

Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, the combined speed of the two players just after the collision would be:

Question 4

Points: 1

An 1 kg object moving to the right at 2 m/s collides inelastically with a 1 kg object moving to the left at 2 m/s. The final velocity of both objects will be

Question 5

Points: 1

A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg, collides with a smaller box with a mass of 2 kg that is stationary. The boxes stick together. What is the velocity of the two combined masses after collision?

Question 6

Points: 1

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.

Question 7

Points: 1

The total momentum before a collision is _________ the total momentum after a collision.

Question 8

Points: 1

A 120 kg lineman moving at -2 m/s tackles an 80 kg fullback moving at +8 m/s. If the fullback's velocity after they collide is +2 m/s, what is the lineman's velocity?

Question 9

Points: 1

A 3,000 kg truck moving at +10 m/s hits a 1,000 kg parked car which moves off at +15 m/s. What is the velocity of the truck?

اختبار إلكتروني: Conservation of Momentum

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اختبار إلكتروني: Conservation of Momentum

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