Stacey sees a person pushing a lawn mower across level ground. She is walking at constant speed and pushing the mower with constant force.

Could the lawn mower move faster than the person is walking?

Explanation:

To understand this, we need to reflect back to the law of motion, the first law to be précised.

It states that "A body will continue to be at rest or uniform/constant motion unless acted upon by an external force which is greater than the current force"  

So we can see that since the person continues to apply the same force at the same speed, the effect on the mover will be the same.

this would be about 43%