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? (posted by Aditi) Answer: m=1200 kg 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? (posted by Aditi) Answer: m=1200 kg u=108 x 5/18=30m/s v=36×5/18=10m/s Change in momentum = m(v-u) = 1200 x (30-10)=1200 ...

Relative velocity in free fall

If a person jumps out of a plane, and a few seconds later, another person jumps, why is it that the difference in their velocities stays the same? Shouldn’t it decrease because eventually, the first diver will reach maximum velocity, but the other diver will be slower at first, but then he reaches max. velocity [...]

Question from Relative velocity

The distance between two cars decrease by 20m in 2s when they travel in opposite direction , and distance decrease by 1m in 1s when they travel in same direction. the speeds of cars are ………. ? (Divya posted this question)

A Numerical Problem on conservation of momentum – An exploding shell

An 80 kg shell is flying at a speed of 36km/h. It explodes into two pieces and one piece of mass 20 kg stops. What is the velocity of other piece? (It’s a simple problem. Expect the visitors to answer soon) Incoming search terms:a 80 kg shell is flyingconservation of momentum problems shellconservation of momentum definition [...]

Tossing a coin in a moving train.

if a man tossed a coin in a moving train and the coin fell back then in which type if motion train is moving? and how? Answer: This shows that the train is accelerated. When the coin was thrown, it had the same velocity of the train. If the train was not accelerated, the coin would have fallen on [...]

Problems from Kinematics again!

Two bodies one held 40 m above other, are released simultaneously . After falling for 3 sec under gravity,  their relative separation is? A particle covers half the distance between two points for equal time for V1 and V2 and other half with V3 an...