Unit 1 science test

Forces are any ——— or ———- that may cause an object to change it’s motion if the forces are balanced and the net force is greater than zero.

Push or Pull.

In order to slide an object across the floor, a force must be applied that overcomes the ——— of the object and the ——— of the object with the

weight, friction.

Friction always opposes the motion.

FRICTION ALWAYS OPPOSES THE MOTION.

If the forces are ——— on an object, the objects will move at a——————, which means if the object is at rest, it will remain at rest and if the object is moving it will not speed up, slow down, or change direction. This is Newton’s —- law.

balanced, constant velocity, 1st.

Newtons 1st law is also known as—————

The law of inertia.

Inertia is the ——- to a ———-. Objects with more ——— have more ———-.

resistance, change in motion, mass, inertia.

The —— between 2 objects depends on the ———— and the ——- between the objects. The ——- the mass, the ——— the pull of gravity but the —— apart the two objects, the ——- the pull of gravity between the 2 objects.

pull, mass of the objects, distance, bigger, greater, farther, weaker.

Anything that has mass exerts a gravitational pull.

Anything that has mass exerts a gravitational pull.

Mass and weight are —- the same thing.

NOT!

Mass is the amount of ——- that makes up an object measured in —-. Mass does —— depend on gravity.

matter, kg, Not

Weight depends on the ——- of gravity and is measured in ———-

pull, Newtons.

Terminal velocity occurs when the ——— force of ———- is —— to the ——- pull of gravity. At this moment, the object will continue to fall but at a ———— rate.

upward, air resistance, equal, downward, constant rate.