Homework Help: physics

Posted by amy on Friday, February 24, 2012 at 3:06am.

The acceleration of a particle moving only on a horizontal plane is given by a= 3ti +4tj, where a is in meters per second-squared and t is in seconds.

At t = 0s, the position vector r= (20.0 m)i + (40.0 m)j locates the particle, which then has the velocity vector v= (5.000 m/s)i + (2.00 m/s)j

(a) What is the expression of its instantaneous velocity vector, as a function of time?
(b) What is the expression of its instantaneous position vector, as a function of time?

At t = 4s, what are :

(c) its position vector in unit-vector notation?
(d) the angle between its direction of travel and the positive direction of the x axis?

No one has answered this question yet.

Answer this Question

Related Questions

physics - The acceleration of a particle moving only on a horizontal plane is ...
College Physics - A particle is moving in the xy plane with constant ...
physics - Initially (at time t = 0) a particle is moving vertically at 5.8 m/s ...
physics - Initially (at time t = 0) a particle is moving vertically at 5.8 m/s ...
physics - Initially (at time t = 0) a particle is moving vertically at 5.8 m/s ...
Physics - Cn u xplain the solutions steps by steps? Cz i really dnt understand ...
physics - At t = 0, a particle moving in the xy plane with constant acceleration...
physics - The position of a particle moving along an x axis is given by x = 15t2...
Calculus-particle motion - 1. A particle is moving on the x-axis (or any number ...
physics - Particle 1 is moving on the x-axis with an acceleration of 5.55 m/s2 ...

For Further Reading

First Name:
School Subject:
Answer: