Question

A ball of mass rolls on the ground with a speed of 1.2 M/S if its mass is 100g find its kinetic energy ​

Answer 1

Answer:

v=1.2m/s

m=100g=100/1000kg=0.1kg

K=1/2*m*v²

 =1/2*0.1 kg*(1.2)²

  =1/2*0.1*1.2*1.2

  =(1/2*1/10)*1.2*1.2

K=(1.2*1.2)/20

 =1.44/20

 =0.072J

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Answer 2

$\huge{\mathfrak{Ello\:Mate!♡}}$•°⭑

Question:-

★ A ball of mass rolls on the ground with a speed of 1.2 M/S if its mass is 100g find its kinetic energy ?

AnsWer:-

$\leadsto \bf \: 0.72 \: joules$

Solution:-

m= 100 g = 100/1000= 0.1 kg

v= 1.2 m/s

As we know the kinetic energy of an object is given by

$\implies{ \bf{\frac{1}{2} mv {}^{2} }}$

putting the values;

$\implies \: {\tt { \frac{1}{2} \times 0.1 \times 1.2 {}^{2} }} \\ \\ \implies \: { \tt{ \frac{1}{ \cancel2} \times 0.1 \times { \cancel{1.44}}}} \\ \\ \leadsto \: { \boxed{ \bf{0.72 \: joules}}}$