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Standard XII

Physics

Problem Solving

A ball of mas...

Question

A ball of mass $5 k g$ is sliding on a plane with initial velocity of $10 m / s$ . If coefficient of friction between surface and ball is $\frac{1}{2}$ , then before stopping it will cover a distance of :

12.5 m

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5 m

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7.5 m

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10 m

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Solution

The correct option is D $10 m$
we know that
$v^{2} = u^{2} + 2 a s$
putting
v = 0
u = 10 m/s
and a = $- μ g$
on solving we will get
distance s = 10 m.

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A ball of mass 5kg is sliding on a plane with initial velocity of 10m/s. If coefficient of friction between surface and ball is 12 , then before stopping it will cover a distance of :

The correct option is D 10mwe know thatv2=u2+2asputtingv = 0u = 10 m/sand a = −μgon solving we will getdistance s = 10 m.

A ball of mass $5 k g$ is sliding on a plane with initial velocity of $10 m / s$ . If coefficient of friction between surface and ball is $\frac{1}{2}$ , then before stopping it will cover a distance of :

The correct option is D $10 m$
we know that
$v^{2} = u^{2} + 2 a s$
putting
v = 0
u = 10 m/s
and a = $- μ g$
on solving we will get
distance s = 10 m.