7. A westward-moving car slows down from 26.0 m/s to 10.0 m/s in 2.0 seconds. What is the magnitude
(i. e., value) and direction of the acceleration? Show work.

Change in speed = (final speed) - (initial speed) = 10-26 = -16

Divide this over the change in time (2 seconds) to get -16/2 = -8

The negative indicates we're slowing down or that the velocity is decreasing.

The direction of the acceleration is opposite of the car's movement, so the direction of acceleration (or more accurately deceleration) is east.

In summary:

Magnitude = 8 m/s^2

direction = east

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step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!