Newton's Law Review

A 60.-kilogram man is pushing a 30.-kilogram lawn mower. Compared to the magnitude of the force exerted on the lawn mower by the man, the magnitude of the force exerted on the man by the lawn mower is

• one-quarter as great

• one-half as great

  the same

• twice as great

• the same

Tags

NGSS.HS-PS2-1

The magnitude of an unbalanced force applied to a 4.0-kilogram crate is 10. newtons. If the magnitude of this applied unbalanced force is doubled, the inertia of the crate is

• halved

• unchanged

• doubled

• quadrupled

Tags

NGSS.HS-PS2-1

The diagram to the left represents two forces, F₁ and F₂, acting concurrently on a block sliding on a horizontal, frictionless surface.

Which statement describes the motion of the block?

• The block is accelerating to the right.

• The block is accelerating to the left.

• The block is moving to the right with constant speed.

• The block is moving to the left with decreasing speed.

Tags

NGSS.HS-PS2-1

A student is standing in an elevator that travels from the first floor to the tenth floor of a building. The student exerts the greatest force on the floor of the elevator when the elevator is

• accelerating upward as it leaves the first floor

• slowing down as it approaches the tenth floor

• moving upward at constant speed

• at rest on the first floor

A 40.0-kilogram child exerts a 100.-newton force on a 50.0-kilogram object. The magnitude of the force that the object exerts on the child is

• 0.0N

• 80.0N

• 100.0N

• 125.0N

Tags

NGSS.HS-PS2-1

How would the mass and weight of an object on the Moon compare to the mass and weight of the same object on Earth?

• Mass and weight would both be less on the Moon.

• Mass would be the same but its weight would be less on the Moon

• Mass would be less on the Moon and its weight would be the same.

• Mass and weight would both be the same on the Moon.

Tags

NGSS.MS-ESS1-2

If a block is in equilibrium, the magnitude of the block’s acceleration is

• zero

• decreasing

• increasing

• constant, non zero

Tags

NGSS.HS-PS2-1

A net force of one newton will

• accelerate a 1-kg mass at 1.0 m/s²

• accelerate a 1-kg mass at 9.8 m/s²

• lift a l-kg mass vertically at a constant speed of 1.0 m/s

• lift a 1-kg mass vertically at a constant speed of 9.8 m/s

Tags

NGSS.HS-PS2-1

A student is standing in an elevator that travels from the first floor to the tenth floor of a building. The student exerts the greatest force on the floor of the elevator when the elevator is

• accelerating upward as it leaves the first floor

• slowing down as it approaches the tenth floor

• moving upward at constant speed

• at rest on the first floor

A 40.0-kilogram child exerts a 80.-newton force on a 50.0-kilogram object. The magnitude of the force that the object exerts on the child is

• 0.0 N

• 80.0 N

• 100.0 N

• 125 N

Tags

NGSS.HS-PS2-1