Question

A body starts from rest and with a uniform acceleration of $10m{s}^{-2}$ for 5seconds. During the next $10$seconds it moves with uniform velocity the total distance travelled by the body:-

• A. $100m$
• B. $125m$
• C. $500m$
• D. $625m$

Answer 1

The correct option is D $625m$

Distance covered in first $5$4 sec $s_1=0\ast 5+\frac{1}{2}\ast 10\ast 5^2=125m$

Distance covered in last $10$ sec $s_2=vt=(u+a\ast 5)t=(0+10\ast 5)10=500m$

Total distance. $D=s_1+s_2=625m$