Explain “Momentum gives more information than velocity alone”.

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4-1.Newton's Laws of Motion

easy

Explain “Momentum gives more information than velocity alone”.

Option A

Option B

Option C

Option D

Solution

Example $1:$ If a pebble and a stone are thrown with same velocity to hit a man. Then it is very difficult to identify which causes more damage as the velocity of both the objects is same. We can know the force on object by studying the change in momentum of the object. The velocity or mass individually are not enough to study the effect of a body an another when they collide.

By knowing the mass we can say that momentum of stone is greater than pebble hence stone is going to cause more damage.

Example $2$ : Let us assume that a car and truck are stationary on horizontal road. To bring them in motion to same velocity in equal time interval, car required less force and truck requires more force. Also if they are moving with same velocity to bring them to rest car requires less retarding force than to bring truck to rest in same time interval.

Thus, to determine effect of force momentum gives more information than velocity alone.

Standard 11

Physics

The magnitude of force acting on a particle moving along $x$-axis varies with time $(t)$ as shown in figure. If at $t=0$ the velocity of particle is $v_0$, then its velocity at $t=T_0$ will be

medium

A lead ball strikes a wall and falls down, a tennis ball having the same mass and velocity strikes the wall and bounces back. Check the correct statement

medium

A bullet is fired from a gun. The force on the bullet is given by:

$F = 600 – 2 \times 10^5\ t$

Where $F$ is in newton and $t$ in second. The force on the bullet becomes zero as soon as it leaves the barrel. What is the average impulse imparted to the bullet?

hard

A ball of mass $50 \,g$ is dropped from a height of $20 \,m$. A boy on the ground hits the ball vertically upwards with a bat with an average force of $200 \,N$, so that it attains a vertical height of $45 \,m$. The time for which the ball remains in contact with the bat is ……….. of a second [Take $g=10 \,m / s ^2$ ]

medium

Consider the following statement: When jumping from some height, you should bend your knees as you come to rest, instead of keeping your legs stiff. Which of the following relations can be useful in explaining the statement

easy

Explain “Momentum gives more information than velocity alone”.

Solution

Similar Questions

The magnitude of force acting on a particle moving along $x$-axis varies with time $(t)$ as shown in figure. If at $t=0$ the velocity of particle is $v_0$, then its velocity at $t=T_0$ will be

A lead ball strikes a wall and falls down, a tennis ball having the same mass and velocity strikes the wall and bounces back. Check the correct statement

A bullet is fired from a gun. The force on the bullet is given by: $F = 600 – 2 \times 10^5\ t$ Where $F$ is in newton and $t$ in second. The force on the bullet becomes zero as soon as it leaves the barrel. What is the average impulse imparted to the bullet?

Consider the following statement: When jumping from some height, you should bend your knees as you come to rest, instead of keeping your legs stiff. Which of the following relations can be useful in explaining the statement

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A bullet is fired from a gun. The force on the bullet is given by:

$F = 600 – 2 \times 10^5\ t$

Where $F$ is in newton and $t$ in second. The force on the bullet becomes zero as soon as it leaves the barrel. What is the average impulse imparted to the bullet?