B. The gravity acceleration is in the same direction as the force of gravity, and thus towards the centre of the earth
Imagine you were able to throw a ball in a frictionless environment
such as outer space. Once you let go of the ball, it will travel forever
in a straight line, and at a constant speed. (At least until it bumps into
something.)
A car accelerates down the road. The reaction to the tires pushing
on the road is the road pushing on the tires.
Yes that's correct. Also zeros in between non-zero numbers are significant figures
Answer: I think the answer is a wave/ a transverse wave, or electromagnetic waves as well.
