Question

A 2000 kg car drives around a circular exit ramp with a radius of 30 meters. The car drives all the way around the ramp in 10 seconds. How fast is the car driving?"

Answer 1

The car is driving at the speed of 18.85 meters per seconds.

Step-by-step explanation:

Given:

The radius of the circular exit ramp = 30 meters

Mass of the car = 2000 kg

Time = 10 seconds

To Find :

The Speed of the car = ?

Solution:

We know that speed =
`(distance)/(time)`---------------(1)

Here the distance is the circumference of the circular exit ramp

Then circumference =
`2 \pi r`

where r is the radius

On substituting the values

Distance =
`2\pi(30)`

Distance = 188.5 meters------------------------(2)

Substituting (2) in (1)

speed =
`(188.5)/(10)` seconds

Speed = 18.85 meters per seconds