question_answer

A ball of mass 10 g is initially moving with a velocity of\[50\text{ }m/s\]. On applying a constant force on the ball for 2 s, it acquires a velocity of\[70\text{ }m/s\]. Calculate the rate of change of momentum.

A) \[0.1\text{ }kg\,\,m{{s}^{-2}}\]

B)  \[\text{1}\text{.2 }kg\,\,m{{s}^{-2}}\]

C)  \[2.1\text{ }kg\,\,m{{s}^{-2}}\]

D)  \[3.2\,\,kg\,\,m{{s}^{-2}}\]

E)  None of these