Achild is pushing a shopping cart at a speed of 1.5 m/s how long will it take this child to push the cart down and i'll with the length of 9.3 m

(9.3 meters) divided by (1.5 meters/sec) = 6.2 seconds .

Here's a suggestion:
When you dictate some text into a machine, take a few seconds
to check and see what the machine thinks you said.