You are on a frictionless horizontal plane. How can you get off if no horizontal force is exerted by

English

Gujarati

Hindi

4-1.Newton's Laws of Motion

medium

You are on a frictionless horizontal plane. How can you get off if no horizontal force is exerted by pushing against the surface

By jumping

By spitting or sneezing

By rolling your body on the surface

By running on the plane

Solution

(b) As no external force is acting on the person, thus the linear momentum of the system is conserved. Hence by spitting or sneezing or throwing any object in the forward direction, will recoil the person in the backward direction and the person can get off the frictionless horizontal plane.

Standard 11

Physics

Rocket engines lift a rocket from the earth surface because hot gas with high velocity

easy

(AIIMS-1998)

A cart loaded with sand moving with velocity $v$. Sand is falling through the hole as shown in diagram then after falling on the ground sand is

medium

A shell of mass $m$ moving with velocity $ v$ suddenly breaks into $2$ pieces. The part having mass $m/4$ remains stationary. The velocity of the other shell will be

medium

An open water tight railway wagon of mass $5 \times 10^3 kg$ coasts at an initial velocity $1.2 m/s$ without friction on a railway track. Rain drops fall vertically downwards into the wagon. The velocity of the wagon after it has collected $10^3 kg$ of water will be ………….. $\mathrm{m}/ \mathrm{s}$

medium

A $100\, kg$ gun fires a ball of $1\, kg$ horizontally from a cliff of height $500 \,m $. It falls on the ground at a distance of $400 \,m $ from bottom of the cliff. Find the recoil velocity of the gun. (acceleration due to gravity $g = 10\,ms^{-1}$ )

medium

You are on a frictionless horizontal plane. How can you get off if no horizontal force is exerted by pushing against the surface

Solution

Similar Questions

Rocket engines lift a rocket from the earth surface because hot gas with high velocity

A cart loaded with sand moving with velocity $v$. Sand is falling through the hole as shown in diagram then after falling on the ground sand is

A shell of mass $m$ moving with velocity $ v$ suddenly breaks into $2$ pieces. The part having mass $m/4$ remains stationary. The velocity of the other shell will be

A $100\, kg$ gun fires a ball of $1\, kg$ horizontally from a cliff of height $500 \,m $. It falls on the ground at a distance of $400 \,m $ from bottom of the cliff. Find the recoil velocity of the gun. (acceleration due to gravity $g = 10\,ms^{-1}$ )

Start a Free Trial Now