Monday
September 1, 2014

Homework Help: Physics

Posted by Physics on Friday, July 10, 2009 at 8:43pm.

ok so I have a question

At the instatn a race began, a 57-kg sprinter was found to exert a force of 80 N on the starting lbock at 22 degrees with respect to the ground

what was the horizontal acceleration of the sprinter?

I got roughly 1.3 s^-2 m

ok here's were i need some help

if the force was exerted for .34 s with what speed did the sprinter eave the starting block?

ok didn't he leave the starting block with an intial speed of zero?

by definition of accleration
a=t^-1 (V-Vo)

if theh Vo is not considered to be zero how to find the V and the Vo to fidn the acceleration

maybe there's another way to do this i do not know how to find the intial speed from the starting block

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - At the instant a race began, a 89.1 kg sprinter exerted a force of ...
physics - At the instant a race began, a 74.0 kg sprinter exerted a force of 850...
physics- please help - World-class sprinters can accelerate out of the starting ...
Physics - A particular sprinter reaches a horizontal acceleration of 13.3 m/s2 ...
Physics - A sprinter accelerates at 4 m/s2 for 3 seconds, and then runs the rest...
Physics - A 73kg sprinter, starting from rest, reaches a speed of 7.0 m/s in 1....
Physics - A 77 kg sprinter is running the 100 m dash. At one instant, early in ...
Physics - A sprinter of mass 63.7 kg runs at a constant speed of 10.2 m/s in a ...
Physics - A sprinter of mass 63.7 kg runs at a constant speed of 10.2 m/s in a ...
physics - a sprinter exerts 850N on the starting blocks at 25 degrees to the ...

Search
Members