Question

) A particle is moving along a straight line and its position is given by

the relation x=t4-6t3-15t2+40t + 9 m. Find

a) Find its Initial velocity

b) Find the velocity at 2s.

c) The acceleration of the particle at that time. --------(3Marks)

b) A car is moving with a speed of 126km/hr is brought to a stop within distance of 200m. Calculate the retardation of the car and the time taken to

stop it. -----------​

Answer 1

Answer:

I did not understand your question ok