Two bodies of masses 3kg and 5kg moving with velocities 2...
Two bodies of masses 3kg and 5kg moving with velocities 2 m/s and V m/s respectively in opposite directions collide. If they move together after collision with velocity 3.5 m/s in the direction of the 5kg mass, find the value of V.
7.8 m/s
6.8 m/s
5.6 m/s
4.6 m/s
Correct answer is B
Since the bodies are in an opposite direction, one takes the negative velocity.
m1v1+m2v2=(m1+m2)v (Momentum when the two bodies move in the same direction after collision)
3(−2)+5(V)=(3+5)3.5
−6+5V=28⟹5V=34;V=6.8m/s
Express 7π6 radians in degrees....
A binary operation ♦ is defined on the set R, of real numbers by \(a ♦ b = \fr...
If \(\begin{pmatrix} 3 & 2 \\ 7 & x \end{pmatrix} \begin{pmatrix} 2 \\ 3 \end{pmatrix} = \be...
If (x+2) and (3x−1) are factors of 6x3+x2−19x+6, find the third factor....
The table shows the operation * on the set {x, y, z, w}. * X Y Z W X Y Z X W ...