Question

A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by vec{v} = [5.00 m/s - (0.0180 m/s^3)t^2] i + [2.00 m/s + (0.550 m/s^2)t] j. Part B What is a_y(t), the y-component of the acceleration of the car as function of time? a_y(t) = (-0.550 m/s^2)t a_y(t) = 2.00 m/s + (0.550 m/s^2)t a_y(t) = 2.00 m/s^2 a_y(t) = 0.550 m/s^2 Part C What is the magnitude of the velocity of the car at t = 7.50 s? Express your answer with the appropriate units. v = Part D What is the direction (in degrees counterclockwise from +x-axis) of the velocity of the car at t = 7.50 s? Express your answer in degrees. heta_v = 116.15 Part E What is the magnitude of the acceleration of the car at t = 7.50 s? Express your answer with the appropriate units. a =

          A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by
vec{v} = [5.00 m/s - (0.0180 m/s^3)t^2] i + [2.00 m/s + (0.550 m/s^2)t] j.

Part B
What is a_y(t), the y-component of the acceleration of the car as function of time?
a_y(t) = (-0.550 m/s^2)t
a_y(t) = 2.00 m/s + (0.550 m/s^2)t
a_y(t) = 2.00 m/s^2
a_y(t) = 0.550 m/s^2

Part C
What is the magnitude of the velocity of the car at t = 7.50 s?
Express your answer with the appropriate units.
v =

Part D
What is the direction (in degrees counterclockwise from +x-axis) of the velocity of the car at t = 7.50 s?
Express your answer in degrees.
	heta_v = 116.15

Part E
What is the magnitude of the acceleration of the car at t = 7.50 s?
Express your answer with the appropriate units.
a =

A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by
vecv = [5.00 m/s - (0.0180 m/s^3)t^2] i + [2.00 m/s + (0.550 m/s^2)t] j.

Part B
What is ay(t), the y-component of the acceleration of the car as function of time?
ay(t) = (-0.550 m/s^2)t
ay(t) = 2.00 m/s + (0.550 m/s^2)t
ay(t) = 2.00 m/s^2
ay(t) = 0.550 m/s^2

Part C
What is the magnitude of the velocity of the car at t = 7.50 s?
Express your answer with the appropriate units.
v =

Part D
What is the direction (in degrees counterclockwise from +x-axis) of the velocity of the car at t = 7.50 s?
Express your answer in degrees.
hetav = 116.15

Part E
What is the magnitude of the acceleration of the car at t = 7.50 s?
Express your answer with the appropriate units.
a =

Added by Imm H.

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