Question

Study the velocity-time graph and calculate.
(a) The acceleration from A to B
(b) The retardation from C to D
(c) The distance covered in the region ABCF
(d) The average velocity from B to C
(e) The velocity of the body at 5th second.

Answer 1

Answer:

I hope you have forget to attach the graph but I know the answer I have already solved it

(i) Acceleration from A to B =  = = 8.33 m/s2

(ii) Acceleration from B to C =  = -10 m/s2

(iii) Distance covered in the region ABE =  × base × height

=  × 3s × 25 m/s

= 37.5 m

(iv) Average velocity from C to D =  

=  = 7.5 m/s

(v) Distance covered in the region BCFE =  × sum of parallel sides x distance between them = × ( 25+15) × 1 = 20 m

Answer 2

Answer:

a) 8.33m/s^2

Explanation:

a) 25-0 / 3

= 25/3

8.33m/s^2