A toy car, initially travelling in a straight line at 30.0 cm/s, slows down with a constant linear acceleration of 3.0 cm/s2. How much time passes before the toy car comes to a halt?

The toy car stops after 10 seconds.

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity of an object changes uniformly at a rate called acceleration.

Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:

The toy car moves at vo=30 cm/s and decelerates at . Note the negative sign of the acceleration that indicates the speed is decreasing over time.

We need to calculate the time needed for the toy car to stop vf=0.

To find the time, we solve [1] for t:

Since all the units of speed and acceleration are in centimeters, we don't need to convert to meters

The toy car stops after 10 seconds.

speed

ratio of distance traveled to time interval

net force

vector sum of forces on object

object

source of diverging light rays either luminous or illuminated

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explanation: