Question

8. In a competition a sprinter starts from rest and achieves a velocity of 30 m/s in a time of
6s. What is his average acceleration?
1
a.
10 m/s2
b. 8 m/s2
C.
7 m/s2
d. 5 m/s2​

Answer 1

SOLUTION

TO CHOOSE THE CORRECT OPTION

In a competition a sprinter starts from rest and achieves a velocity of 30 m/s in a time of 6s. What is his average acceleration

a. 10 m/s²

b. 8 m/s²

c. 7 m/s²

d. 5 m/s²

EVALUATION

Here it is given that in a competition a sprinter starts from rest and achieves a velocity of 30 m/s in a time of 6s.

Hence the required average acceleration

$\displaystyle \sf{ = \frac{Velocity \: of \: the \: sprinter}{Time} }$

$\displaystyle \sf{ = \frac{30}{6} \: \: m / {s}^{2} }$

$\displaystyle \sf{ = 5 \: \: m / {s}^{2} }$

FINAL ANSWER

Hence the correct option is d. 5 m/s²

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