Homework Help: physics

Posted by Tamera on Friday, September 7, 2012 at 12:21am.

A racing car reaches a speed of 40 m/s. At this instant, it begins a uniform negative acceleration, using a parachute and a braking system, and comes to rest 5.0 s later.
(a) Determine the acceleration of the car.
(b) How far does the car travel after acceleration starts?

physics - charlie, Friday, September 7, 2012 at 6:30am
a) use v=u +at solve for a
b) use v^2=u^2+2as solve for s.

v is final vel; u is initial vel; t is time and a is accel. S is displacement; or distance in this case.

Answer this Question

Related Questions

physics - A racing car reaches a speed of 40 m/s. At this instant, it begins a ...
physics - A 605-kg racing car completes one lap in 14.3 s around a circular ...
physics - A racing car, starting from rest, travels around a circular turn of ...
Math - A 605-kg racing car completes one lap in 14.3 s around a circular track ...
phyisics - A 615 kg racing car completes one lap in 14.3 s around a circular ...
Physics - Suppose that a car traveling to the West (-x direction) begins to slow...
Physics - A speeder passes a parked police car at a constant speed of 31.8 m/s. ...
physics - a racing car has a uniform acceleration of 4ms-2. what distances will ...
physics - 14. A racing car accelerates uniformly through three gears, changes ...
physics - A car starts from rest and travels for t1 seconds with a uniform ...

For Further Reading

First Name:
School Subject:
Answer: