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makkiz [27]
3 years ago
10

a runner covers the last straigjt stretch of a race in 4 s. during that time, he speeds up from 5m/s to 9m/s.

Physics
1 answer:
PtichkaEL [24]3 years ago
8 0

During that final period of time,
his acceleration is
                                (9 m/s - 5 m/s) / (4 sec) = 1 m/s² .

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____ is the detection of halo objects like brown dwarfs when their gravitational fields concentrate the light of distant sources
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Which factor MOST directly affects the flow of ocean currents?
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A sled slides along a horizontal surface on which the coefficient of kinetic friction is 0.25. Its velocity at point A is 8.4 m/
Bad White [126]

Answer:

1.06 secs

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FΔt = mv - mu

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The force applied on the sled is the frictional force, which is given as:

F = -μmg

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It took the sled 1.06 secs to travel from A to B.

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