Question:
The position of a particle is given by

Where t is in seconds and the coefficients have the proper units for r to be in meters.

(a) Find the v and a of the particle?

(b) What is the magnitude and direction of velocity of the particle at t = 2.0 s?

Answer:

(b) 8.54 m/s, 69.45° below the x-axis

Direction, ø = tan^-1 (v_y / v_x )

= tan^-1 (-8 / 3 )

= - tan^-1 (2.667)

= -69.45°

The negative sign indicates that the direction of velocity is below the x-axis.

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Question:
The position of a particle is given by

Where t is in seconds and the coefficients have the proper units for r to be in meters.

(a) Find the v and a of the particle?

(b) What is the magnitude and direction of velocity of the particle at t = 2.0 s?

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Question: The position of a particle is given by Where t is in seconds and the coefficients have the proper units for r to be in meters. (a) Find the v and a of the particle? (b) What is the magnitude and direction of velocity of the particle at t = 2.0 s?

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Question:
The position of a particle is given by

Where t is in seconds and the coefficients have the proper units for r to be in meters.

(a) Find the v and a of the particle?

(b) What is the magnitude and direction of velocity of the particle at t = 2.0 s?