At a place where the acceleration due to gravity is $10\,m\,{\sec ^{ - 2}}$ a force of $5\, kg-wt$ acts on a body of mass $10\, kg$ initially at rest. The velocity of the body after $4$ second is .......... $m/\sec^{-1}$
At a place where the acceleration due to gravity is $10\,m\,{\sec ^{ - 2}}$ a force of $5\, kg-wt$ acts on a body of mass $10\, kg$ initially at rest. The velocity of the body after $4$ second is .......... $m/\sec^{-1}$
$5$
$10$
$20$
$50$
At a place where the acceleration due to gravity is $10\,m\,{\sec ^{ - 2}}$ a force of $5\, kg-wt$ acts on a body of mass $10\, kg$ initially at rest. The velocity of the body after $4$ second is .......... $m/\sec^{-1}$
Acceleration $ = \frac{{{\rm{Force}}}}{{{\rm{Mass}}}} = \frac{{50\;N}}{{10\;kg}} = 5\;m/{s^2}$
From $v = u + at = 0 + 5 \times 4 = 20\;m/s$