# An electric toy car with a mass of #5 kg# is powered by a motor with a voltage of #4 V# and a current supply of #5 A#. How long will it take for the toy car to accelerate from rest to #3/2 m/s#?

##### 1 Answer

Oct 6, 2017

#### Explanation:

We are not given an efficiency of the system, therefore, we must assume that: