The displacement of a particle is represented by the following equation s = 3t3 + 7t2 + 5t + 8 where s is in metres t in seconds. The acceleration of the particle at t = 1 s is
An object travels 16 m in 4 s and then another 16 m in 2 s. What is the average speed of the object?
V = 8 -9t if t<1
V = 8 - 2t if t > 2
Find the value of V (m/s) when t = 3.