A) Now let's see what we can tell from an equation for position: x(t)=6t^2+4.2t+9x(t)=6t2+4.2t+9 What is...
A) Now let's see what we can tell from an equation for position: x(t)=6t^2+4.2t+9x(t)=6t2+4.2t+9 What is the object's initial velocity? Assume each term has units of meters, and that time is in seconds.
B) Now let's see what we can tell from an equation for position: x(t)=6t^2+4.2t+9x(t)=6t2+4.2t+9 What is the object's acceleration? Assume each term has units of meters, and that time is in seconds.
Homework Answers
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A) Now let's see what we can tell from an equation for position:
x(t)=6t^2+4.2t+9x(t)=6t2+4.2t+9 What is...
The position of an object is defined by the following equation: (x)(t)=5-6t+4t^2. Plot the position of...
The position of an object is defined by the following equation: (x)(t)=5-6t+4t^2. Plot the position of x versus time.
Solve the physics problem step by step 5. See graph. The position graph follows the equation:...
Solve the physics problem step by step
5. See graph. The position graph follows the equation: x-0.2t2 +1.4t+3 Assume SI units. a. What is the average velocity between 0 and 7 seconds? b. What is the instantaneous velocity at 2 seconds? c. At what time(s) does the velocity of the object equal zero? d. Sketch the velocity graph. x (m) 10 Question 5 6. The position of an object is given by: t2+7t +55 4 +3 12 2 Assume SI...
An object's motion can be described by the equation x(t) = (6.0 m/s2)t2-(2.0 m/s)t+1.0 m.
An object's motion can be described by the equation x(t) = (6.0 m/s2)t2-(2.0 m/s)t+1.0 m. a. Find the object's position, velocity, and acceleration at t = 3.0 s. Plot the object's position, velocity, and acceleration (all on separate plots) from t = 0 s to t= 5 s. The following graph shows an object's velocity over time. At t-0 s the objects begins its motion at x = -2m.b. What is the object's displacement from t=0 s to t = 6 s? c....
If we measure acceleration (a) in m/s2, velocity (v) in m/s, position (x) in meters, and...
If we measure acceleration (a) in m/s2, velocity (v) in m/s, position (x) in meters, and time (t) in seconds, which one of the following equations could work in terms of units? t2 = x/a x2 = 2av Ov = 2ax
Given position x = 2t + 5t2 (where x is in meters and t is in...
Given position x = 2t + 5t2 (where x is in meters and t is in seconds): A. Calculate the average velocity over the time interval t = 1 s to t = 4 s. Units: m.s-1 B. What is the instantaneous velocity at t = 4 s? Units: m.s-1 C. What is the acceleration of the object? Units: m.s-2 D. In which direction is the object accelerating?
The position of a particle in meters is given by x=2.5t+3.1t^2- 4.5t^3, where t is the...
The position of a particle in meters is given by x=2.5t+3.1t^2- 4.5t^3, where t is the time in seconds. What are the instantaneous velocity and instantaneous acceleration at t=0.0 s? At t=2.0 s? What are the average velocity and average acceleration for the time interval 0 <t< 2.0 s?
The position x, in meters, of an object is given by the equation x = A...
The position x, in meters, of an object is given by the equation x = A + Bt + Ct 2, where t represents time in seconds. What are the SI units of A, B, and C? A m, s, s B m, m/s, m/s2 C m, m, m D m/s, m/s2, m/s3 E m, s, s2
The position of a particle moving along the x axis depends on the time according to the equation x = ct2-bt3
The position of a particle moving along the x axis depends on the time according to the equation x = ct2-bt3, where x is in meters and t in seconds. What are the units of (a) constant c and (b) constant b? Let their numerical values be 3.0 and 2.0, respectively. (c) At what time does the particle reach its maximum positive x position? From t=0.0s to t=4.0 s, (d) what distance does the particle move and (e) what is...
3. Let's return to the snail example of inbreeding from class. Let's say now that we...
3. Let's return to the snail example of inbreeding from class. Let's say now that we start with a population that has 75% heterozygotes and 25% homozygotes for one of the two alleles (e.g. 25% A1A. 75% AAc). We see that heterozygosity decreases in frequency in the population over time, due to the complete selfing of hermaphroditic snails. Let's also say that the population starts at 800 individuals and stays that way over each generation (i.e. population size is fixed...
The position of a particle is given in cm by x = (7) cos 9?t, where...
The position of a particle is given in cm by x = (7) cos 9?t, where t is in seconds. (a) Find the maximum speed. ...... m/s (b) Find the maximum acceleration of the particle. ...... m/s2 (c) What is the first time that the particle is at x = 0 and moving in the +x direction? ....... s
Solve the physics problem step by step
5. See graph. The position graph follows the equation: x-0.2t2 +1.4t+3 Assume SI units. a. What is the average velocity between 0 and 7 seconds? b. What is the instantaneous velocity at 2 seconds? c. At what time(s) does the velocity of the object equal zero? d. Sketch the velocity graph. x (m) 10 Question 5 6. The position of an object is given by: t2+7t +55 4 +3 12 2 Assume SI...
If we measure acceleration (a) in m/s2, velocity (v) in m/s, position (x) in meters, and time (t) in seconds, which one of the following equations could work in terms of units? t2 = x/a x2 = 2av Ov = 2ax
3. Let's return to the snail example of inbreeding from class. Let's say now that we start with a population that has 75% heterozygotes and 25% homozygotes for one of the two alleles (e.g. 25% A1A. 75% AAc). We see that heterozygosity decreases in frequency in the population over time, due to the complete selfing of hermaphroditic snails. Let's also say that the population starts at 800 individuals and stays that way over each generation (i.e. population size is fixed...
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