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Question

A particle is moving in X-Yplane, which is initially at x=y=2m. The particle's initial velocity is 2ms-1 along positive X-axis and acceleration is 1ms-2 along positive Y-axis. Determine the position of a particle at t=5s.


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Solution

Step 1: Given data

The initial position of a particle at X-axis, x0=2m

The initial velocity of a particle along X-axis , ux=2ms-1

Acceleration of a particle along X-axis , ax=0ms-2

The initial position of a particle at Y-axis, y0=2m

The initial velocity of a particle along Y-axis , uy=0ms-1

Acceleration of a particle along Y-axis , ay=1ms-2

Time, t=5s

Step 2: Calculate the distance of a particle along X-axis at t=5s

Using the second equation of the motion, s=ut+12at. Here, u is the initial velocity of a particle, s is the displacement of the particle, and a is the acceleration of a particle at a time t.

On putting the values along X-axis in s=ut+12at:

x=x0+uxt+12axt

=2+2×5+12×0×52=2+10+0=2+10=12m

Step 3: Calculate the distance of a particle along Y-axis at t=5s

On putting the values along Y-axis in s=ut+12at:

y=y0+uyt+12ayt

=2+0×5+12×1×52=2+0+12×1×25=2+0+252=2+252=2×2+252=4+252=292=14.5m

Hence, the position of a particle is (12m,14.5m) in X-Yplane at t=5s.


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