NEWTONS LAWS

The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. The head of a hammer must be strong to resist what force?

• The force of the air resistance on the moving hammer

• The force of the person using the hammer

• The force of gravity pulling down on the hammer

• The force of the nail pushing in the opposite direction

Tags

NGSS.MS-PS2-1

The nozzle of a rocket is pointed downward so that, as fuel is ignited, the exhaust pushes downward. Why is this arrangement necessary for a rocket to function properly?

• The rocket is protected from the heat of the exhaust.

• Burned fuel can be collected on the ground.

• As exhaust pushes down, the rocket is pushed up

• This allows the rocket to be steered properly.

Tags

NGSS.MS-PS2-1

The illustration shows all the forces in Newtons (N) acting on a box. The sum of all the forces acting on the box results in a force acting on the box.

• to the right with a strength of 11 Newtons

• to the left with a strength of 7 Newtons

• to the right with a strength of 25 Newtons

• to the left with a strength of 6 Newtons

Tags

NGSS.MS-PS2-2

Which of the following graphs shows how the mass of an object changes the force needed to move it according to Newton’s Second Law of Motion?

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Tags

NGSS.MS-PS2-2

A baseball bat hits a baseball with a force of 50 newtons. What is the force and its direction exerted by the ball on the bat?

• 50 newtons, same direction

• 50 newtons, opposite direction

• 200 newtons, same direction

• 200 newtons, opposite direction

Tags

NGSS.MS-PS2-1

Two metal spheres are suspended on wires so that they hang next to each other, just touching. Sphere A is raised as shown and released. Without friction or air resistance, describe what would happen to Sphere B.

• Ball B would not move

• Ball A will stop moving when it bumps into ball B

• Ball B will move in the opposite direction away with the same force

Tags

NGSS.MS-PS2-1

The illustration shows the forces in Newtons (N) acting on three different blocks. Which boxes will move under these conditions?

• Blocks 1 and 2

• Blocks 2 and 3

• Blocks 1 and 3

• Blocks 1, 2, and 3

Tags

NGSS.MS-PS2-2

Students are investigating how mass affects the force needed to move an object. They attached a wooden block to a spring scale and placed a 10 g mass on top of the block and pulled it 50 cm across the table. Which of the following changes to their set-up would result in a larger force reading on the spring scale?

• Sliding the block 60 cm

• Attaching a larger spring scale

• Using a 20g mass

• Using a circular piece of wood

Tags

NGSS.MS-PS2-2

which vehicle has the greatest amount of inertia

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Tags

NGSS.MS-PS2-2

Using what you know about F=ma, which ball would have the greater force if traveling at the same acceleration? Tennis ball=1 ounce and the baseball=5 ounces

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Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1