Start Free Mock LoginAlready registered? Login here

Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics1-DMedium2 minQB

PhysicsMediumsingle choice

A rocket is fired vertically upwards and moves with a net acceleration of $5 m / s^{2}$ . After $40$ s the fuel is exhausted. The time taken to reach the highest point after the fuel is exhausted is:

Options:

Answer:

Solution:

At burnout $v = 5 \times 40 = 200$ m/s; rising under gravity, $0 = 200 - 10 t$ gives $t = 20$ s. Option B.

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:1-D

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...