Question

match the following i) Porifera a) Pleurobrachia ii) Ctenophora b) Scypha iii) Amphibia c) Passer iv) Aves d) Hyla​

Answer 1

Answer:

A car traveling on a straight road accelerates uniformly at a ms² from its initial speed of 20 ms until it reaches a speed of 30 ms. The car travels at this speed for 600 m and then decelerates uniformly at ams² until it 1 2 comes to rest. The (t, v) graph for the motion is shown above. Show that the time spent decelerating is six times as long as the time spent accelerating The total distance traveled by the car from time t = 0 until it comes to rest in 2900 m.

Calculate (i) The time for which the car is accelerating

(ii) The value of a

(iii) The speed of the car 40 s before it comes to rest.