Asprinter leaves the starting blocks with an acceleration of 4.5m/s^2. what is the sprinter's speed 2 s later

9 m/s

Explanation:

For a uniformly accelerated motion, the speed at time t is given by:

where

u is the initial speed

a is the acceleration

t is the time

In this problem, we have:

u = 0 m/s is the initial speed

a = 4.5 m/s^2 is the acceleration

t = 2 s is the time

Substituting into the equation, we find

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2

thermal energy is the answer