what is relative velocity in one dimension if va and vb are the velocities of two body a and b respectively then prove vab=va -vb

Which example has gravitational potential energy? a. a horse slowing down from a run b. an apple about to fall from a tree branch c. a bicycle being pedaled down a horizontal path d. beaker sitting on the floor

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Avector a⃗ has a length of 8.6 m and points in the negative x direction. find the x component of the vector −3.7a⃗ .