Motion and Forces Test Review 2425

The arrows in the diagram below represent the forces acting on a moving bicycle at two different times, time 1 and time 2. The length of each arrow represents the amount of force being applied.  As a result of the change in the forces from time 1 to time 2, the bicyclist will

• (1) move slower in a forward direction

• (2) move in a backward direction

• (3) move faster in a forward direction

• (4) stop moving

Tags

NGSS.MS-PS2-2

The diagram represents a person pushing a 50-kg box up a ramp. Which force will decrease if the surface of the ramp is made smoother?

• (1) gravity

• (2) magnetism

• (3) friction

• (4) electricity

Tags

NGSS.MS-PS2-2

In a car accident, a seat belt helps prevent injuries by applying a force

• (1) less than the force of the moving passenger

• (2) greater than the force of the moving car

• (3) in the same direction as the car’s motion

• (4) in the opposite direction of the passenger’s motion

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

To make an object move you must first apply ---

• an opposing force

• an unbalanced force

• a stationary force

• a vertical force

Tags

NGSS.MS-PS2-2

a force is best defined as ---

• the application of weight

• a push or pull that is exerted on matter

• the flow of electric charges

• a bond in which electrons are shared

A student pushes against a wall with 20 N of force and the wall does not move. In this situation, the wall exerts --

• 0 N of force

• less than 20 N of force

• 20 N of force

• more than 20 N of force

Tags

NGSS.MS-PS2-1

Oliver stepped onto a three-car subway train with standing room only. What caused him to fall backward into other riders when the train suddenly moved forward?

• He was riding in the last car of the train.

• He had heat exhaustion from the overcrowded train.

• Oliver's body resisted a change in the subway train's inertia.

• Oliver's body was responding to the force of gravity.

Tags

NGSS.HS-PS2-1

Which law of motion predicts that a moving hockey puck will continue to move in the same direction at the same speed unless acted upon by another force?

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Newton's Law of Universal Gravitation

Which law explains the relationship among mass, force and acceleration?

• Universal Law of Gavitation

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

Tags

NGSS.MS-PS2-2

The force of an object, with a certain mass accelerating at a certain rate, can be determined by using the equation below.

force = mass x acceleration

Which object would have the greatest force?

• A 5 kg object accelerating at 10 m/s

• A 5 kg object accelerating at 20 m/s

• a 20 kg object accelerating at 4 m/s

• a 20 kg object accelerating at 3 m/s

Tags

NGSS.MS-PS2-2