Question

The x and y coordinates of the particle at any time are x = 5t – 2t2 and y = 10t respectively, where x and y are in meters and t in seconds. The acceleration of the particle at t = 2 s is

• A. $0$
• B. $5 \ m/s^2$
• C. $-4 \ m/s^2$
• D. $-8 \ m/s^2$

Answer 1

Answer: (C)

$-4 \ m/s^2$

Answer 2

The correct option is (C): $-4 \ m/s^2$.