Question

When are you undergoing an acceleration on car?

a- speed up
b-slow down
c-make turns
d-all of the above



A negative acceleration means that your object is

a- not accelerating
b-speeding up
c-not moving
d- slowing down


In each of the following cases , determine what car has no acceleration?

a -a car shortly after a stoplight turns green
b - a car approaching a red light
c - a car with the cruise control set at 80 km / h
d- a car turning a curve at a constant speed




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Answer 1

When are you undergoing an acceleration on car?

= D. All of above

A negative acceleration means that your object is

= D. Slowing down.

In each of the following cases , determine what car has no acceleration?

= C. A car with the cruise control set at 80 km / h

Answer 2

1.C

If the speed is increasing, the car has positive acceleration. When the car slows down, the speed decreases. The decreasing speed is called negative acceleration. In both cases, the car is accelerating, but one acceleration is positive and one is negative.

2.D