Physics Motion Exam Prep
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Physics Motion Exam Prep
Sample questions with model answers
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A particle moving along x-axis has acceleration $f$, at time t, given by $f = f_0 [1 - (t/T)]$ where $f_0$ and $T$ are constants. The particle at $t = 0$ has zero velocity. In the time interval between $t = 0$ and the instant when $f = 0$ the particle's velocity ($v_x$) is ................
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$\frac{1}{2} f_0 T$
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Velocity of a particle is given by $\vec{v} = (t^2 \hat{i} - 3t \hat{j})$ m/s. What is acceleration at time $t = 3$ s?
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$6 \hat{i} - 3 \hat{j}$ m/s$^2$
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A particle starting from the origin of co-ordinate system with velocity $2 \hat{i}$ m/s moves in XY plane with constant acceleration of $\hat{i} + 3 \hat{j}$ m/s$^2$. Find its y co-ordinate when its x co-ordinate is 30 m?
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54 m
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A particle starting from the origin of co-ordinate system with velocity $2 \hat{i}$ m/s moves in XY plane with constant acceleration of $\hat{i} + 3 \hat{j}$ m/s$^2$. Find magnitude of its velocity at that time.
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19.698 m/s
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