Force Test

The property of matter that resists changes in motion is called

• friction

• gravity

• inertia

• weight

An orange might roll off your cafeteria tray when you stop suddenly because of

• the balanced forces acting on the orange

• the centripetal force acting on the orange.

• the friction forces acting on the orange

• the orange’s inertia.

The law of inertia states that an object

• will continue moving at the same velocity unless an outside force acts on it.

• will continue moving in a straight line unless an outside force acts on it.

• that is not moving will never move unless a force acts on it.

• at rest will remain at rest unless acted on by an outside force.

• will do all of the above.

A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly. The reason this can be done is that

• gravity pulls very hard on the milk carton.

• the milk carton has very little weight.

• the milk carton has inertia.

• none of the above

One object has twice as much mass as another object. The first object also has twice as much

• velocity

• gravitational acceleration.

• inertia

• all of the above

According to Newton’s First Law, a railroad train in motion should continue going forever even if its engine is turned off. We never observe this because railroad trains:

• move too slowly.

• must go up and down hills.

• are much too heavy.

• always have forces that oppose that motion

If no unbalanced forces are acting on a moving object it will

• continue moving at a constant acceleration.

• continue moving at a constant velocity and/or speed.

• move slower and slower until it finally stops

If a force of 12 N is applied to an object with a mass of 2 kg, the object will accelerate at

• 0.17 m/s²

• 6 m/s²

• 24 m/s²

• 12 m/s²

Tags

NGSS.MS-PS2-2

Accelerations are produced by

• net forces

• velocities

• accelerations

• masses

• none of the above.

How does acceleration of an object change in relation to its mass? It is

• directly proportional

• Acceleration doesn't depend on mass at all

• inversely proportional

Tags

NGSS.HS-PS2-1