Gloria pushes a full shopping cart with a force of 16 N. The cart has a mass of 19 kg. As Gloria pushed on the cart, she increased its velocity by 8.0 m/s. For how long did Gloria apply the force to the shopping cart?

Force on the cart = (cart's mass) x (cart's acceleration)

16 N = (19 kg) x (acceleration)

Acceleration of the cart = 16 N / 19 kg = 0.842 m/s²

How many seconds did it have to accelerate at the rate of 0.842 m/s²

in order to increase its speed by 8 m/s?

(8 m/s) / (0.842 m/s²) = 9.5 seconds