# science

posted by
**tasha**
.

How long will it take a 1000-kg car with a power output of 20 kW to go from 10m/s to 20 m/s?

Ignoring friction, the change in kinetic energy has to equal Power*time

posted by
**tasha**
.

How long will it take a 1000-kg car with a power output of 20 kW to go from 10m/s to 20 m/s?

Ignoring friction, the change in kinetic energy has to equal Power*time