Question

1 A rocket, initially at rest on the ground, accelerates vertically.
It accelerates uniformly until it reaches a speed of 900 m / s after 30 s.
After this period of uniform acceleration, the rocket engine cuts out. During the next 90 s, the
upward speed of the rocket decreases uniformly to zero.
(a) On Fig. 4.1, plot a speed-time graph for the rocket for the first 120 s of its flight.

Answer 1

Answer:

is question me figure kahan hai

Answer 2

Answer:

Explanation:

(a) using suitable scales 2 straight line sections, continuous 0 to 120s, 1st section positive gradient and 2nd section negative gradient.

section 1 straight line from (0,0) to (30, 900)

section 2 straight line from end of section 1 to (120, 0)