Advertisements
Advertisements
प्रश्न
State the relation between the momentum of a body and the force acting on it.
Advertisements
उत्तर
`"Force" = "Change in Momentum"/"Time Taken"`
APPEARS IN
संबंधित प्रश्न
From a rifle of mass 4 kg, a bullet of mass 50 g is fired with an initial velocity of 35 m s−1. Calculate the initial recoil velocity of the rifle.
A shell of mass 0.020 kg is fired by a gun of mass 100 kg. If the muzzle speed of the shell is 80 m s–1, what is the recoil speed of the gun?
Name the physical quantity which is considered to be a measure of the quantity of motion of a body.
Explain the meaning of the following equation : .
p = m x v
where symbols have their usual meanings.
Fill in the following blanks with suitable words :
Momentum is a _____________ quantity. Its unit is _____________.
The velocity of a body of mass 10 kg increases from 4 m/s to 8 m/s when a force acts on it for 2 s.
(a) What is the momentum before the force acts ?
(b) What is the momentum after the force acts ?
(c) What is the gain in momentum per second ?
(d) What is the value of the force ?
State the law of conservation of momentum.
Why are car seat-belts designed to stretch some what in a collision ?
The troops (soldiers) equipped to be dropped by parachutes from an aircraft are called paratroopers. Why do paratroopers roll on landing ?
A monkey of mass 20 kg rides on a 40 kg trolley moving with constant speed of 8 m/s along a horizontal track If the monkey jumps vertically to grab the overhanging branch of a tree, the speed of the trolley after the monkey has jumped off is ______.
