Physics

Which statement best describes the motion of the car?

• The car moved at a speed of 5 meters per second and then moved at a slower speed during the next 5 seconds.

• The car moved at a speed of 5 meters per second and then moved at a faster speed during the next 5 seconds.

• The car moved at a speed of 1 meter per second and then moved at a slower speed during the next 5 seconds.

• The car moved at a speed of 1 meter per second and then moved at a faster speed during the next 5 seconds.

Two students push on the opposite sides of a crate, with the force applied by each student in newton (N), as shown in the diagram. Assuming the crate is on a frictionless surface, describe the effect of these forces on the crate. - Will the crate move toward the left, toward the right, or not at all. - What is the direction and the magnitude of the net force on the crate? Review the diagram carefully. Then enter your response in the box provided.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

This question has two parts. A player hits a baseball with a baseball bat. Part A Which statement about the forces between the ball and the bat is correct?

• The force of the ball on the bat was less than the force of the bat on the ball.

• The force of the ball on the bat was equal to the force of the bat on the ball.

• The force of the ball on the bat was greater than the force of the bat on the ball.

Tags

NGSS.MS-PS2-1

Which statement BEST supports the answer to Part A?

• Whenever two objects interact, the more massive object always applies a greater force than the less massive object.

• Whenever two objects interact, the faster object always applies a greater force than the slower object.

• Whenever two objects interact, they always apply equal and opposite forces on each other.

• Whenever two objects interact, their forces always combine and are applied in the direction of the object that is moving the fastest.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What happens to the speed of an object if the net force acting on it is zero?

• It speeds up

• It slows down

• It remains constant

• It changes direction

Tags

NGSS.MS-PS2-2

Which of the following is NOT a type of force?

• Gravitational

• Frictional

• Magnetic

• Thermal

Tags

NGSS.MS-PS2-4

When a ball is thrown up into the air, which type of energy is at its maximum when the ball reaches its highest point?

• Kinetic energy

• Thermal energy

• Potential energy

• Chemical energy

Tags

DOK Level 2: Skill/Concept

Which of the following best describes the relationship between pressure and area?

• Pressure is directly proportional to area

• Pressure is inversely proportional to area

• Pressure is unrelated to area

• Pressure equals area squared

What is the formula for calculating the kinetic energy of an object?

Tags

NGSS.MS-PS3-1

A student sets a 0.4 kilogram (kg) soccer ball on the ground and gives it a hard kick. The ball traveled a distance of 37 meters (m). The acceleration of the ball was 2,550 meters per second squared (m/s²). Based on the data, how much force in newtons (N) did the student apply to the ball?

• 14.8 N

• 68.9 N

• 1,020.0 N

• 6,375.0 N

Tags

NGSS.MS-PS2-2