## Class 12 Physics – (AISSCE)Previous Question Papers with marking scheme

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## A simple numerical on momentum

Car mass is 1200 kg moving velocity is 108 km/hr. On applying brakes velocity reduced to 36 km/hr. Find change in momentum?
u=108 x 5/18=30m/s
v=36×5/18=10m/s
Change in momentum = m(v-u) = 1200 x (30-10)=1200 …

## A simple numerical on momentum

Car mass is 1200 kg moving velocity is 108 km/hr. On applying brakes velocity reduced to 36 km/hr. Find change in momentum?
u=108 x 5/18=30m/s
v=36×5/18=10m/s
Change in momentum = m(v-u) = 1200 x (30-10)=1200 …

## Explain IMPULSE in simple terms

Vimal asked this question. Impulse is the effect of a force and is measured as the change in momentum produced. The same effect, that is the same change in momentum can be produced by a large force acting for a short interval of time, a small force acting for a large interval of time or a moderate […]

## What is meant by momentum?

Momentum is the quantity of  motion .Any thing in the universe is characterized by the quantity associated with it. In motion both mass and velocity contribute to its quantity. Momentum is the product of mass and velocity.

## How to describe momentum physically ?

Kiran asks: “How do you describe momentum physically by not in definitions like product of mass and velocity?” Answer: Momentum is defined as “Mass in Motion” or “The quantity of motion“. Momentum is a measure of the “effect” a moving body can produce. It is a measure of the “effort” required to bring a body to […]

## Gain in momentum of a body starting from rest and moving with a uniform acceleration

A mass of 2 g initially  at Rest Travels for 4 sec with and acceleration of 1.5m/s2.The gain of momentum of the body is: This question was posted by Thushar Goyal. Answer: Taking u = 0 m/s, a= 1.5 m/s2 and t = 4 s calculate v v=u+at =6m/s masss, m = 2…