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? (c)the car then slows to 66ft/s in 3.0 s. What is the average acceleration for this time? (d) what is the overall average acceleration for the total time?

(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)

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

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.