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

Erika found out that after working in her current job for 9 months she has earned 6 days of vacation c. How many vacation days does Erika earn in 6 months of wo
a) Rationalise the denominator of 20/root 10 Give your answer in its simplest form.
What household chores do you do every day?
When two objects at different temperatures come into contact energy is always transferred from ?
(BRAINLIEST) short essay of (gifts you have received and how you felt about them)
Find 250% of 60 please help thanks
Tomorrow is to yesterday as future is to​
The United States in celebrating freedom yet still maintaining the institution of slavery was: O Abolitionist O Hypocritical O Patriotic
Question 11 (5 points) Identify the effects the Hull House had on social reform and education? Individual-based, segregation, and a focus on the arts Collaborat
3. Alice writes a stery Change into Past Perfect tense