# If the position of aparticle is given by x=5.0-9.8t+6.4t^2, what is the velocity and acceleration of the particle at t=4.0s?

##### 2 Answers

Mar 17, 2018

#### Explanation:

At

Mar 17, 2018

The given equation can be compared with

which is an equation of position-time relationship of a particle moving with constant acceleration.

So,rearranging the given equation,we get,

So,the acceleration of the particle is constant i.e

Now,we can use the equation,

So,