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3 years ago

Give an example of how a bicycle rider would accelerate? Explain the three different ways a bicyclist could

1 answer:

7 0

A cyclist can increase the speed of their bike in various ways such as, changing gears, positioning themselves properly, increase the pedalling rate

<h3>Ways in which a cyclist can increase the speed of a bicycle</h3>

Bicycle riders could accelerate/ increase their speed in various ways

By Changing the gears and by doing so increasing the speed
By Positioning themselves in a streamlined manner, this is so that they become aerodynamic hence they cut across airflow.
By increase the rate at which they are pedalling the bicycle.

Learn more about increasing bicycle speed here:

brainly.com/question/13749553

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The kinetic energy of the ball and the potential energy of the ball/Earth system were measured and organized in the spreadsheet

marin [14]

Based on the data provided, the thermal energies at the given time intervals are as follows:

At time t = 0.0 secs; thermal energy = 0.0 J
At time, t = 0.8 secs; thermal energy = 0.0 J
At time, t = 2.0 secs; thermal energy = 3.9 J
At time, t = 2.8 secs; thermal energy = 6.7 J

<h3>What is the law of conservation of energy?</h3>

The law of conservation of energy states that the total energy in an isolated system is conserved.

For a ball undergoing energy conversion between kinetic and potential energy, the sum of the energy remains constant.

Any reduction in total energy is due to conversion of some energy to thermal energy.

Sum of energy: Kinetic + potential + thermal = 15.2 J
Thermal energy = 15.2 - (PE + KE)

At time t = 0.0 secs

Thermal energy = 15.2 - (15.2 + 0.0)

Thermal energy = 0.0 J

At time, t = 0.8 secs

Thermal energy = 15.2 - (4.7 + 10.5)

Thermal energy = 0.0 J

At time, t = 2.0 secs

Thermal energy = 15.2 - (7.4 + 3.9)

Thermal energy = 3.9 J

At time, t = 2.8 secs

Thermal energy = 15.2 - (8.5 + 0.0)

Thermal energy = 6.7 J

Therefore, the thermal energies at the given time intervals are as follows:

At time t = 0.0 secs; thermal energy = 0.0 J
At time, t = 0.8 secs; thermal energy = 0.0 J
At time, t = 2.0 secs; thermal energy = 3.9 J
At time, t = 2.8 secs; thermal energy = 6.7 J

Learn more about conservation of energy at: brainly.com/question/166559

8 0

2 years ago

Which statement is correct about how the temperature of an object changes?

34kurt

The molecules making up object collide with the molecules of the other and some of the kinetic energy from a warmer object is transferred to the cooler one.

4 0

4 years ago

Suppose the line on a distance-versus-time graph and the line on a speed-versus-time graph are both slanted straight lines going

lesya [120]

No, because the distance-time would show a constant velocity but the velocity-time graph shows an increasing velocity.

4 0

4 years ago

Kepler's laws, satellites motion and weightlessness

Anon25 [30]

Answer:

First Kepler law states that Each planet describes an ellipsoidal motion about the sun as its single focus.

Second Kepler law states that An imaginary line joining a planet to the Sun sweeps out equal areas in equal time intervals.

Third Kepler law states that The squares of period of revolution of the planet around the sun are proportional to the cubes of mean distance between the planet and the sun.

Weightlessness is the condition where the body has zero gravity ( its acceleration is equal to the acceleration due to gravity )

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3 0

3 years ago

A plane is landing. It started at 400m/s and ended up at 50m/s after 30 seconds. What is it's acceleration?

quester [9]

Give u = start velocity

v = end velocity

v = u + at

50 = 400 + a*30

30a = -350

a = -116.67 m/ $s^{2}$

**Why the accecleration is negative number**

Because displacement, velocity, and acceleration are VECTOR QUANTITIES.

Vector Quantity must have direction.

4 0

4 years ago