Newton’s third law of motion states that when one object exerts a force on a second object, the forces are
a) equal in magnitude and equal in direction
b) equal in magnitude and opposite in direction
c) opposite in magnitude and equal in direction
d) opposite in magnitude and opposite in direction

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.