Class 11

Work, Energy, Power and Collision question bank (Physics)

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Q1.

$A$ particle moves from position $3\hat i + 2\hat j - 6\hat k$ to $14\hat i + 13\hat j + 9\hat k$ due to a uniform force of $(4\hat i + \hat j + 3\hat k) \, N$. If the displacement is in meters,the work done will be ......... $J$.

(A)

$100$

(B)

$200$

(C)

$300$

(D)

$250$

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Q2.

$A$ force of $5 \, N$ acts on a $15 \, kg$ body initially at rest. The work done by the force during the first second of motion of the body is

(A)

$5 \, J$

(B)

$\frac{5}{6} \, J$

(C)

$6 \, J$

(D)

$75 \, J$

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