Physics, 17.09.2019 03:10 expeditionofsin

If a particle's position is given by x=4-12t+3t^2 (where t is in seconds and x is in meters), what is its velocity at t=1s? b. is it moving in the positive or negative direction of x just then? c. what is its speed just then? d. is the speed increasing or decreasing just then? e. is there ever an instant when the velocity is zero? f. is there a time after t=3s when the particle is moving in the negative direction of x?

Answers: 1

Show answers

Another question on Physics

Physics, 22.06.2019 10:30

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.

Answers: 3

Answer

Physics, 22.06.2019 15:30

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)

Answers: 3

Answer

Physics, 22.06.2019 21:30

What ia the energy of an object because of its potential and kinetic energies

Answers: 1

Answer

Physics, 22.06.2019 23:30

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?

Answers: 3

Answer

You know the right answer?

If a particle's position is given by x=4-12t+3t^2 (where t is in seconds and x is in meters), what i...

Questions