Start Free Mock LoginAlready registered? Login here

Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics1-DMedium2 minQB

PhysicsMediumsingle choice

A particle starts from rest at $t = 0$ . Its acceleration is $+ 3 m / s^{2}$ for $0 < t < 2$ s, $- 6 m / s^{2}$ for $2 < t < 3$ s and $+ 3 m / s^{2}$ for $3 < t < 5$ s. The particle is again at rest at:

Options:

Answer:

Solution:

The velocity is the running area under the $a$ - $t$ graph: $+ 6$ m/s after the first interval, $+ 6 - 6 = 0$ at $t = 3$ s, and $+ 6$ m/s again after the last interval. So the particle is at rest at $t = 0$ and $t = 3$ s. Option B.

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:1-D

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...