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slava [35]
3 years ago
10

A runner covers the last straight stretch of a race in 3 s. During that time, he speeds up from 5 m/s to 11 m/s.What is the runn

er's acceleration in this part of the race? ​
Mathematics
1 answer:
nikitadnepr [17]3 years ago
5 0

Answer:

From first Newton's equation of motion:

{ \bf{v = u + at}}

Substitute the variables:

{ \tt{11 = 5 + (a \times 3)}} \\ { \tt{3a = 6}} \\ { \tt{a = 2 \:  {ms}^{ - 2} }}

Acceleration is 2 ms-²

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