How do you find acceleration with displacement final velocity and time

Modify the equation fδt=δ (mv) to find the force of friction.

2. -/1 pointsserpse10 2.7.p.017.mi. an object moving with uniform acceleration has a velocity of 14.0 cm/s in the positive x direction when its x coordinate is 2.97 cm. if its x coordinate 2.85 s later is -5.00 cm, what is its acceleration? cm/s2 need ? read it master it

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?