Force and Motion

The net force on a vehicle that is accelerating at a rate of 1.5 m/s2 is 1,800 newtons. What is the mass of the vehicle to the nearest kilogram?

• 2700

• 1801.5

• 1200

• .0083

Tags

NGSS.MS-PS2-2

Which answer choice correctly describes the ball’s kinetic and potential energy?

• The ball has more potential energy at position X than at position Z.

• The ball has more kinetic energy at position Y than at position W.

• The potential energy and kinetic energy of the ball are equal at position X.

• The potential energy and kinetic energy of the ball are greatest at position Z.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

A large rock is motionless on a flat sidewalk. Which statement best explains why the rock remains motionless?

• There are no forces acting on the rock.

• The only force acting on the rock is directed toward the sidewalk.

• The forces acting on the rock are all balanced.

• The sidewalk exerts an unbalanced force on the rock.

A pitcher throws a ball toward a player holding a softball bat. The player uses the bat to hit the ball. The bat applies a 10-newton force to the ball. Which statement correctly describes the reaction force between the bat and ball?

• The reaction force is the force that causes the ball to move toward the bat.

• The reaction force is the force applied to the bat by the player holding the bat.

• The reaction force is the force that pulls the ball toward the ground.

• The reaction force is the force of the ball on the bat.

Tags

NGSS.MS-PS2-1

Which table best shows the average speed of the toy car at different time intervals?

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Tags

NGSS.MS-PS3-1

Which answer choice best describes the movement of the object between the times of 0 and 6 seconds on the graph?

• Moving at a constant speed

• Moving toward the north

• Accelerating

• Stopped

Tags

NGSS.MS-PS3-1

The diagrams show forces acting on a toy car as it moves to the right.

Which diagram shows the toy car that will most likely accelerate to the right based on these conditions?

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Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A steel ball is at one end of a box that is moving forward as shown. The box suddenly stops.

According to Newton’s first law, what happens to the steel ball just after the box stops?

• Because of friction, the ball continues rolling forward at the same speed

• Because of friction, the ball rolls forward at an increased speed.

• Because of inertia, the ball continues rolling forward at the same speed.

• Because of inertia, the ball rolls forward at an increased speed

A student pushes a 51.5 kilogram bookshelf across a smooth floor with a net force of 67 N.

What is the approximate acceleration of the bookshelf?

Tags

NGSS.MS-PS2-2

A student investigates the motion of a toy vehicle. The student graphs 40 seconds of data from the investigation.

Which statement best describes the motion of the toy vehicle during the first 30 seconds of the investigation?

• The vehicle was traveling at a constant speed.

• The vehicle was accelerating at a constant rate.

• The speed of the vehicle was increasing.

• The acceleration of the vehicle was increasing.

Tags

NGSS.MS-PS3-1