Q- nbsp- A body falls freely from rest- nbsp- It covers as much distance in the last second of its motion as covered in the first three seconds- nbsp- The body has fallen for a time of-a- nbsp- 3 s nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- B- 5 s nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- C- 7 s nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- D- 9 s

Dear Student, nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;According #160;to #160;ques ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

3rd Equation of Motion

Q.):- nbsp;...

Question

Q.):- A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of
a) 3 s B) 5 s C) 7 s D) 9 s

Open in App

Solution

Dear Student,
$A c c o r d i n g t o q u e s t i o n d i s \tan c e i n f i r s t 3 s = \frac{1}{2} \times 10 \times 3^{2} = 45 m a n d l e t i t f a l l s f o r t s t h e n d i s \tan c e i n l a s t s e c o n d s = 0 + \frac{g}{2} (2 t - 1) = 45 t = \frac{10}{2} = 5 s$
Regards

Suggest Corrections

Similar questions

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time;

Q. A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of (Neglect air friction and take

g = 10 m / s^{2}

)

Q. A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of (Neglect air friction and take

g = 10 m / s^{2}

)

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time;

Q. A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of ( in seconds upto two decimals)

Join BYJU'S Learning Program

Q.):- A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of a) 3 s B) 5 s C) 7 s D) 9 s

Dear Student, According to question distance in first 3s=12×10×32=45m and let it falls for tsthen distance in last seconds =0+g22t-1=45t=102=5s Regards

Q.):- A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of
a) 3 s B) 5 s C) 7 s D) 9 s

Dear Student,
$A c c o r d i n g t o q u e s t i o n d i s \tan c e i n f i r s t 3 s = \frac{1}{2} \times 10 \times 3^{2} = 45 m a n d l e t i t f a l l s f o r t s t h e n d i s \tan c e i n l a s t s e c o n d s = 0 + \frac{g}{2} (2 t - 1) = 45 t = \frac{10}{2} = 5 s$
Regards