Your shopping cart has a mass of 65 kilograms. in order to accelerate the shopping cart down an aisle at 0.30 m/s2 what force would you need to use or apply to the cart.
i don't know how to solve this

Use Newton's second law of motion:

         Force = (mass) x (acceleration) .

Take that formula, write ' 65 kg ' in place of 'mass', and
write ' 0.3 m/s² ' in place of 'acceleration', and solve it
for Force.

I know absolutely positively that you can take over and finish it
now, because only an hour ago, you thanked me for solving the
exact same problem for somebody else, and the entire solution
was right there, WITH the answer !