Arocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 44.1 m/ s 2 . the acceleration period lasts for time 7.00 s until the fuel is exhausted. after that, the rocket is in free fall.

acceleration of rocket is

time taken by rocket

so the distance covered by rocket will be

speed of the rocket

now the maximum height it will reach from this is given by

so the total height of rocket will be

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)