An object of mass $1 \,kg$ travelling in a straight line with a velocity of $10\, m\, s^{-1}$ collides with,and sticks to,a stationary wooden block of mass $5\, kg$. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also,calculate the velocity of the combined object.
- A$12\, kg\, m\, s^{-1}$,$5/6\, m/s$
- B$15\, kg\, m\, s^{-1}$,$4/3\, m/s$
- C$20\, kg\, m\, s^{-1}$,$3/5\, m/s$
- D$10\, kg\, m\, s^{-1}$,$5/3\, m/s$
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$(a)$ Define momentum of a body.
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View SolutionTwo objects,each of mass $1.5\, kg$,are moving in the same straight line but in opposite directions. The velocity of each object is $2.5\, m/s$ before the collision during which they stick together. What will be the velocity (in $m/s$) of the combined object after collision?
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View Solution$(a)$ Define momentum and mention its $SI$ unit.
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View Solution$A$ bullet of mass $5\, g$ travelling at a speed of $120\, m s^{-1}$ penetrates deeply into a fixed target and is brought to rest in $0.01\, s$. Calculate
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