An object of mass 1 ,kg travelling in a strai | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Mass of the object,$m_1 = 1\, kg$.Velocity of the object before collision,$v_1 = 10\, m/s$.Mass of the stationary wooden block,$m_2 = 5\, kg$.Velo

Vedclass · Accepted Answer

$10\, kg\, m\, s^{-1}$,$5/3\, m/s$

Vedclass · Answer

(D) Mass of the object,$m_1 = 1\, kg$.Velocity of the object before collision,$v_1 = 10\, m/s$.Mass of the stationary wooden block,$m_2 = 5\, kg$.Velocity of the wooden block before collision,$v_2 = 0\, m/s$.Total momentum before collision $= m_1 v_1 + m_2 v_2 = 1(10) + 5(0) = 10\, kg\, m\, s^{-1}$.According to the law of conservation of momentum,the total momentum remains conserved.Therefore,total momentum after collision $= 10\, kg\, m\, s^{-1}$.Total mass of the combined system $= m_1 + m_2 = 1 + 5 = 6\, kg$.Let the velocity of the combined object be $v$.$10 = (m_1 + m_2)v$$10 = 6v$$v = 10/6 = 5/3\, m/s$.

Similar Questions

$A$ $8000 \,kg$ engine pulls a train of $5$ wagons,each of $2000 \,kg$,along a horizontal track. If the engine exerts a force of $40000 \,N$ and the track offers a friction force of $5000 \,N$,then calculate the acceleration (in $m/s^2$) of the train.

From a rifle of mass $4\, kg$,a bullet of mass $50\, g$ is fired with an initial velocity of $35\, m\, s^{-1}$. Calculate the initial recoil velocity (in $m/s$) of the rifle.

Which of the following has more inertia: $(a)$ a rubber ball and a stone of the same size? $(b)$ a bicycle and a train? $(c)$ a five-rupee coin and a one-rupee coin?

Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?

$A$ hockey ball of mass $200 \,g$ travelling at $10 \,m \,s^{-1}$ is struck by a hockey stick so as to return it along its original path with a velocity of $5 \,m \,s^{-1}$. Calculate the magnitude of the change in momentum of the hockey ball due to the force applied by the hockey stick.

Vedclass Test Series

Exam Paper Generator

Online Exam Module