1. What is Bernoulli\'s principle? The principal of the school a kid named Berno

Question

1.

What is Bernoulli's principle?

The principal of the school a kid named Bernoulli goes to

When a flow of fluid enters an area of low pressure, it speeds up

The principle idea that a cream filled snack is preserved when surrounded by a shell

2.

A net force of 8 N is applied to a 2 kg object. The object’s acceleration is

4 m/s2

8 m/s2

16 m/s2

2 m/s2

3.

Suppose a 2 kg object is falling through the air and accelerating downwards at 8 m/s2. Taking g = 10 m/s2 What is the magnitude and direction of the force of air resistance on it?

2N downward

2N upward

1N downward

1N upward

2N downward

2N upward

1N downward

1N upward

Explanation / Answer

Problem 1) Option (b)

Problem 2) Acceleration, a = F/m = 8/2 = 4 m/s2

Problem 3) Acceleration a = 8 m/s 2

Acceleration due to gravity g = 10 m/s 2

mass of the object m = 2 kg

net force F = weight - air resistance

          ma = mg - air resistance

air resistance = mg - ma

                     = m(g-a) = 2(10-8) = 2 (2) = 4 N upward

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

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