In the sentence "the speed of an object can vary," what does the word vary mean?

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

What are atoms of the same element with varying number of neutrons

Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.