# Free help with physical science?

A car travels on a straight,level road.(a) starting from rest,the car is going 44ft/s at the end of 5.0 s.what is the car's average acceleration in ft/s2? (b) in 4.0 seconds, the car is going 88ft/s.what is the car's average acceleration for this time period? (c)the car then slows to 66ft/s in 3.0 s. What is the average acceleration for this time period? (d) what is the overall average acceleration for the total time?

 Unknown008 Posts: 8,147, Reputation: 3745 Uber Member #2 Aug 30, 2011, 10:11 AM
(a) Use your definition of acceleration. Can you state it?

(b) Use your definition of acceleration again.

(c) Same as (b)

(d) Same as (b)
 bus118 Posts: 2, Reputation: 1 New Member #3 May 4, 2012, 09:04 AM
Find the net force produced by a 30-N force and a 20-N force in each of the following cases:

(a) Both forces act in the same direction.
(b) The two act in opposite directions
 bus118 Posts: 2, Reputation: 1 New Member #4 May 4, 2012, 09:05 AM
Find the net force produced by a 30-N force and a 20-N force in each of the following cases:
(a) Both forces act in the same direction.
(b) The two act in opposite directions.

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