1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nataliya [291]
3 years ago
11

How would the terminal velocity of a piece of tissue paper compare to the terminal velocity of a rock?

Physics
1 answer:
matrenka [14]3 years ago
5 0

Answer: Rock require larger drag force and to achieve it rock need to move at a very high terminal velocity.  

Explanation: Terminal velocity is defined as the final velocity attained by an object falling under the gravity. At this moment weight is balanced by the air resistance or drag force and body falls with zero acceleration i.e. with a constant velocity.

Case 1: Terminal velocity of a piece of tissue paper.

The weight of tissue paper is very less and it experiences an air resistance while falling downward under the effect of gravity.

Downward gravitational force, F = mg

Upward air resistance or friction or drag force will be f_{1}

So, paper will attain terminal velocity when mg =  f_{1}

Case 2: Rock is very heavy and require larger air resistance to balance the weight of rock relative to the tissue paper case.

Downward force on rock, F = Mg

Drag force = f_{2}

Rock will attain terminal velocity when Mg = f_{2}

Mg > mg

so, f_{2} > f_{1}

And rock require larger drag force and to achieve it rock need to move at a very high terminal velocity.  

You might be interested in
An elevator starts from rest with a constant upward acceleration and moves 1 m in the first 1.7 s. A passenger in the elevator i
avanturin [10]

Answer: Tension = 53.6N

Explanation:

Given that

Height h = 1 m

Time t = 1.7 s.

Mass m = 5.1 kg 

From the equation of the motion we can get the acceleration of the elevator:

h = X0+ V0t + at2/2;

Th elevator starts from rest with a constant upward acceleration. Initial velocity Vo = 0, also Xo = 0; thus

a = 2h/t2 = 2 × 1/1.7^2

a = 0.69 m/s2.

Then we can find the tension in the cord by using the formula

T = mg + ma

= 5.1 (9.8 + 0.69)

= 5.1 × 10.5

= 53.6N

7 0
3 years ago
A ball with a mass of 5.0 g is moving at a speed of 2.0 m/s. Would doubling the mass or doubling the speed have a greater effect
Sloan [31]

Answer:

Explanation:

doubling the speed will have a greater impact on kinetic energy as KE is a product of mass and the square of velocity.

KE = ½mv²

Base KE = ½(0.005)2.0² = 0.01 J

doubling the mass

        KE = ½(0.010)2.0² = 0.02 J

doubling the velocity

        KE = ½(0.005)4.0² = 0.04 J

8 0
3 years ago
What is gathering info using your senses?
stiks02 [169]
Observations is the answer.
6 0
3 years ago
Read 2 more answers
A pendulum consists of a stone with mass m swinging on a string of length L and negligible mass. The stone has a speed of v0 whe
Dmitriy789 [7]

Answer:

(a) v = \sqrt{ mv_0^2 - 2gL(1-\cos(\theta))}

(b) \theta = \arccos(\frac{2gL-v_0^2}{2gL})

(c) E_{total} = \frac{1}{2}mv_0^2

Explanation:

(a) The total mechanical energy of the system is conserved.

K_A + U_A = K_B + U_B\\\frac{1}{2}mv_0^2 + 0 = \frac{1}{2}mv^2 + mgh \\h = L - L\cos(\theta) = L(1 - \cos\theta)\\\frac{1}{2}mv^2 = \frac{1}{2}mv_0^2 - mgL(1-\cos(\theta))\\v^2 = mv_0^2 - 2gL(1-\cos(\theta))\\v = \sqrt{ mv_0^2 - 2gL(1-\cos(\theta))}

(b) The conservation of energy states

K_A + U_A = K_M + U_M\\\frac{1}{2}mv_0^2 + 0 = 0 + mgL(1-\cos(\theta))\\1-\cos(\theta) = \frac{v_0^2}{2gL}\\\cos(\theta) = 1-\frac{v_0^2}{2gL} = \frac{2gL-v_0^2}{2gL}\\\theta = \arccos(\frac{2gL-v_0^2}{2gL})

(c) As explained in part (a) the total mechanical energy of the system is equal to the initial kinetic energy, since the potential energy of the system at that point is zero.

E_{total}= K_A + U_A = K_A + 0\\E_{total} = \frac{1}{2}mv_0^2

8 0
3 years ago
A motorist driving at 25 meters/second decelerates to
timama [110]
Kinetic energy = (1/2) (mass) (speed)²

Before slowing down, the car's speed is 25 m/s,
and its kinetic energy is ...

                             (1/2) (1,500 kg) (25 m/s)²

                          = (1/2) (1,500 kg) (625 m²/s²)

                          =        468,750 joules .

After slowing down, the car's speed is 15 m/s,
and its kinetic energy is ...

                             (1/2) (1,500 kg) (15 m/s)²

                          = (1/2) (1,500 kg) (225 m²/s²)

                          =         168,750 joules.

The car lost  (468,750 - 168,750) = 300,000 joules of K.E. 

The law of Conservation of Energy says:

                  That 300,000 joules had to go somewhere.

If it's a standard, gas-powered car, then the kinetic energy got
put into the brakes.  The energy turned into heat, and the heat
was carried off in the air.

If it's a more modern electric or hybrid car, then the kinetic energy
spun the wheel motors, turning them temporarily into electrical
generators.  The generators converted the kinetic energy into
electrical energy, which got put back into the car's batteries, and
could be used again.  That's why electric cars use less gas. 
5 0
3 years ago
Read 2 more answers
Other questions:
  • A conducting rod (length = 2.0 m) spins at a constant rate of 2.0 revolutions per second about an axis that is perpendicular to
    7·1 answer
  • What kind of air mass comes from the Gulf of Mexico? A. continental tropical B. continental polar C. maritime tropical D. mariti
    5·2 answers
  • An athlete jumping vertically on a trampoline leaves the surface with a velocity of 8.5 m/s upward. what maximum height does she
    9·1 answer
  • A 4-79 permalloy solenoid coil needs to produce a minimum inductance of 1.1 . If the maximum allowed current is 4 , how many tur
    10·1 answer
  • A hydraulic lift is to be used to lift a 1900-kg weight by putting a weight of 25 kg on a piston with a diameter of 10 cm. Deter
    9·1 answer
  • A box slides down a 30.0° ramp with an acceleration of 1.20 m/s^2. Determine the coefficient of kinetic friction between the box
    14·1 answer
  • If your license says you must wear corrective lenses, you ____________________________.
    14·1 answer
  • If water is split to form hydrogen and oxygen - is this a change of state and wht
    7·1 answer
  • An elevator is moving is an upwards
    15·1 answer
  • A simple pendulum of length 1.5m has a bob of mass 2.0kg. State the formula for the period of small oscillations and evaluate it
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!