A body at rest will remain at rest unless acted on by a(an) . Question 1 options:

A. external, unbalanced force.

B. external, balanced force.

Which would not reduce the amount of green house gasses in the air

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Amajor difference radio waves, visible light, and gamma rays is the of the photons, which results in different photon frequencies and wavelengths