Question

Two dragonflies have the following equations of motion: x1 = 2.2 m + (0.71 m/s )t...

Two dragonflies have the following equations of motion:

x1 = 2.2 m + (0.71 m/s )t

x2 = –3.1 m + (1.4 m/s )t

Which dragonfly is moving faster?​

Which dragonfly starts out closer to x = 0 at t = 0?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Answer:

a) So dragonfly with equation x2 = -3.1 m + (1.4m/s)t has more speed.

b) At t = 0, dragonfly with equation x1 = 2.2 m + (0.71m/s)t starts out closer to x = 0.

Explanation:

The equations of motions of 2 dragonflies are given by   

x1 = 2.2 m + (0.71 m/s )t

x2 = –3.1 m + (1.4 m/s )t

a) The velocity of a body is given by the expression

  

So dragonfly with x2 = -3.1 m + ( 1.4 m/s ) t is moving faster.

b) At t = 0

x1 = 2.2 m + (0.71 m/s) * 0 = 2.2m

x2 = -3.1 m + ( 1.4 m/s) * 0 = -3.1m

So at t = 0 dragonfly following equation x1 = 2.2m + (0.71 m/s)t starts out closer to x = 0.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Observer S detects two flashes of light. A big flash occurs at x1 = 1020 m...
Observer S detects two flashes of light. A big flash occurs at x1 = 1020 m and, 4.34 μs later, a small flash occurs at x2 = 690 m. As detected by observer S', the two flashes occur at a single coordinate x'. (a) What is the speed parameter of S', and (b) is S' moving in the positive or negative direction of the x-axis? To S', (c) which flash occurs first and (d) what is the time interval between...
Observer S detects two flashes of light. A big flash occurs at x1 = 977 m...
Observer S detects two flashes of light. A big flash occurs at x1 = 977 m and, 5.26 μs later, a small flash occurs at x2 = 617 m. As detected by observer S', the two flashes occur at a single coordinate x'. (a) What is the speed parameter of S', and (b) is S' moving in the positive or negative direction of the x axis? To S', (c) which flash occurs first and (d) what is the time interval...
Two radioactive nuclides, S and M, both have the same activity X at time t =...
Two radioactive nuclides, S and M, both have the same activity X at time t = 0. S and M have a half-life of 26 years and 16 years respectively. Now both samples S and M are mixed. Find out the total activity of the mixture at t = 50 years?
1.At time t = 0, the initial position of an object is x1 = -9.00 m....
1.At time t = 0, the initial position of an object is x1 = -9.00 m. Two seconds later he is in position x2 = 5.00m and finally moves to position x3 = -12.0m for a total time of three seconds. Speed average (in m / s) of the object in this time interval is: 2.The position of a particle is described by the function x = 4.0 t2 - 2.0 t + 2.0 (m). Determine the average acceleration (in...
A ball moves along a 1D coordinate system with the following motion parameters at time t...
A ball moves along a 1D coordinate system with the following motion parameters at time t = 0 s: x0 = 7.7 m and v0 = 0 m/s. The ball has a constant acceleration of 1.2 m/s2 during the entire motion which occurs over a time of 3 s. Assume that an error in position of 9 % is acceptable in this application over the entire motion. How many rows N will be needed in the table to model the...
The following two equations represent the x and y positions of a cannon ball after it...
The following two equations represent the x and y positions of a cannon ball after it is fired at an angle out of a cannon. Use these equations to determine the magnitude of the initial velocity of the cannon ball at t=0 s.   x(t) = (1.2) t y(t) = (2.7) t - (4.9) t2
A tiempo t = 0, la posición inicial de un objeto es x1 = -9.00 m....
A tiempo t = 0, la posición inicial de un objeto es x1 = -9.00 m. Dos segundos más tarde se encuentra en la posición x2 = 5.00 m y finalmente se mueve a la posición x3 = -12.0 m para un tiempo total de tres segundos. La velocidad promedio (en m/s) del objeto en este intervalo de tiempo, es: At time t = 0, the initial position of an object is x1 = -9.00 m. Two seconds later he...
A projectile motion (i.e. cannon) can be modeled via the following equations: x=u cos⁡θ t y=-0.5...
A projectile motion (i.e. cannon) can be modeled via the following equations: x=u cos⁡θ t y=-0.5 g t^2+u sin⁡θ t Where: x: Position of the cannonball after t seconds in the x-direction (meters) y: Position of the cannonball after t seconds in the y-direction (meters) u: Initial velocity of the cannonball (meters per second) g: Acceleration due to gravity (meters per second squared) t: Time (seconds) In this question, we are trying to see the effects of the angle ϴ...
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position,...
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, the origin, at t = 0 and moves to the right. The amplitude of its motion is 3.10 cm, and the frequency is 1.60 Hz. (a) Find an expression for the position of the particle as a function of time. (Use the following as necessary: t. Assume that x is in centimeters and t is in seconds. Do not include units in your answer.)...
A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s....
A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s. What is the particle's speed at t=0s ? What is the particle's speed at t=5.0s ? Express your answer using two significant figures. What is the particle's direction of motion, measured as an angle from the x-axis, at t=0 s ? Express your answer using two significant figures. What is the particle's direction of motion, measured as an angle from the x-axis, at t=5.0s...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT