Aparticle that is composed of two up quarks and
one down quark is a
(1) meson (3) proton
(2) neutron (4) positron

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

How do we measure or think of speed in the united states?