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CBSE Class 9 Answered

A racing car starts from rest and has uniform acceleiation of 5m/sec ^2.If it travels for 20sec  ,find the final velocity at this instant  
Asked by jsrashokkumar1978 | 30 May, 2020, 12:10: PM
Expert Answer
v = ?
a car starts from rest, u =0 
a = 5 m/s2 
t= 20 s 
 
first equation of motion is, 
v = u + at
v = 0 + 5 x 20
v =100 m/s 
 
Thus, at this instant final velocity is 100 m/s 
Answered by Shiwani Sawant | 30 May, 2020, 05:16: PM
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