# Homework Help: Acceleration of a particle

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1. Dec 10, 2011

### demv18

1. The problem statement, all variables and given/known data
the acceleration of a particle is given by a=B√t where B=1.25, with the appropriate units. At t=0s, v=7m/s and x=1.5m

a) what are the dimensions for "B" appearing in the formula a=B√t ?

b) what is the speed as a function of time?

c) What is the position as a function of time?

d) what are the acceleration, speed, and position at t=6.75s?

e) what is the average speed for the time interval t=0s to t=6.75s?

Really need a quick explanation of this problem... no idea where to start!!

2. Relevant equations
i have no idea :(

3. The attempt at a solution

2. Dec 10, 2011

### Simon Bridge

Welcome to PF. Sometimes the difficulty is just getting started.

a. "dimensions" is this context, is related to the units - work out the units of B, then express them in terms of M L and T (mass, length and time).

b. how is speed related to acceleration?

c. how is distance related to speed

d & e come from the last answers.