Momentum is the product of mass and velocity.
Thus, P=mv
where,
P is momentum.m is mass of the body.v is velocity of the body.
To gather more information and details on the soil
It can't be less than 250 N or the cart wouldn't move at all. That means there is only 1 answer. It's between not enough info or 250 N. The answer is 250 N. If it was any more, there would be acceleration.
60 minutes = 1h
500/x = 10/100
She swam 5 kilometers per hour.
That's the definition of the property called "density".