The X and Y Positions (In Meters)of a Particle Are

question 71

Multiple Choice

The x and y positions (in meters) of a particle are given by: x(t) = 253 t,and y(t) = -12.0 t² + 155 t + 100.The speed of the particle at t = 12.9 s is

• A)0 m/s.
• B)98.4 m/s.
• C)296 m/s.
• D)408 m/s.
• E)529 m/s.