1- Suppose the jumbo jet of mass 30000 kg flies against an air resistance of 850

Question

1- Suppose the jumbo jet of mass 30000 kg flies against an air resistance of 85000 N while the thrust of all four engines is 100000 N.

Find the acceleration of the plane.  

Express your answer to three significant figures and include the appropriate units.

What will the acceleration be when the air resistance builds up to 100000 N?

Express your answer to three significant figures and include the appropriate units.

2-

If the forces that act on a cannonball and the recoiling cannon from which it is fired are equal in magnitude, how does the acceleration of the cannonball compare with the acceleration of the cannon?

If the forces that act on a cannonball and the recoiling cannon from which it is fired are equal in magnitude, how does the acceleration of the cannonball compare with the acceleration of the cannon?

A-The acceleration of the cannonball is less than the acceleration of the cannon due to small mass. B- The acceleration of the cannon is greater than the acceleration of the cannonball due to large mass. C- The acceleration of the cannonball is greater than the acceleration of the cannon due to small mass. D- The cannon and the cannonball have the same acceleration.

Explanation / Answer

thrust = 100000 N

a) acceleration = a = F/ m = 100000 / 30000 = 3.33 m/sec^2

resistance = 85 000 N

net force = 100000-85000 = 15 000 N

F= m a

acceleration = a = F / m = 15 000 / 30 000 = 0.5 m/ sec^2

2) mass is inversly proportional to acceleration

so correct answer is............. The acceleration of the cannonball is greater than the acceleration of the cannon due to small mass........... c

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.