blakewells1999out2h5 blakewells1999out2h5
  • 02-09-2017
  • Physics
contestada

Starting from rest, a runner at a track meet reaches a speed of 7.5 m/s in 1.7 s. How far does she run during this time, assuming her acceleration is uniform?

Respuesta :

meerkat18
meerkat18 meerkat18
  • 15-09-2017
For this problem, we use the equations derived for rectilinear motion at constant acceleration. The equations are:

a = (v - v₀)/t
x = v₀t + 0.5at²
where
a is acceleration
v and v₀ are the final and initial velocities, respectively
x is the distance
t is the time

First, let's determine the a to be used in the second equation:

a = (7.5 m/s - 0 m/s)/1.7 s = 4.411 m/s²
x = (0)(1.7s) + 0.5(4.411 m/s²)(1.7 s)²
x = 6.375 m
Answer Link

Otras preguntas

Ava is 23 cm taller than olivia, and olivia is half the height of Lucas. if Lucas is 1.78 m tall, how tall are Ava and olivia? express their heights in centimet
Jesuits combined Catholic beliefs with _______________ beliefs.
What evidence is there that the present Day continents were once a single landmass?
TRUE OR FALSE? The genetic code is determined by the SIZES of the nitrogen bases.
write an equation in standard form for the line that passes through the points (4,5) and has a slope m= 2/3
what is equal to 3/8
how did cyrus the great hold his growing empire together
The strongest voice in shaping foreign policy belongs to __________.
The question says, A baseball player reaches first base 30% of the times he is at bat. Out of 50 times at bat, about how many times will the player reach first
10 less than five of a certain number is fourteen more than 7 times of that number. What is the number?