Forces and Motion

A ball is rolling straight across the floor until Bradley kicks it is an example of which law?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

 A bowling ball and a baseball both roll across your foot at the same speed. The bowling ball hurts much more. This applies which of Newton’s Laws?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

  Choose which force is at work.

 Two socks stuck together coming out of a dryer.

• Electric force is used

• Gravitational force is used

• Magnetic force is used

Select the correct response that provides evidence to support the following claim.

Claim: Gravitational interactions are attractive and depend on the masses of interacting objects and the distances between them.

• The Moon is too small to exert any gravitational force on the Earth.

• The Sun exerts an equal amount of gravitational force on all objects in the solar system because it is the center of our solar system.

• Jupiter is the center of our solar system because it is the most massive object in our solar system.

• It takes Neptune longer to orbit the Sun than it takes for Mercury to orbit the Sun because the gravitational force exerted on Neptune is less than the gravitational force exerted on Mercury due to Neptune's distance from the Sun..

Tags

NGSS.MS-PS2-4

Which of the following statements is correct based on the data you see in the chart below: (8-PS2-3)

Wraps of wire around an          Strength of Electromagnet

 iron nail connected to a            (mV/M):

1.5V battery:

8                                                      3mV/m

12                                                    4mV/m

16                                                    5mV/m

20                                                    6mV/m

• The more wraps of wire around the nail makes a weaker electromagnet

• The more wraps of wire around the nail makes a stronger electromagnet

• The number of wraps of wire around the nail does not have an effect on the strength of the electromaget.

Tags

NGSS.MS-PS2-3

When riding the bumper cars at the fair, you bump into your friend and your car bounces backwards, which of Newton's Laws does this apply?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

Tags

NGSS.MS-PS2-1

When a person jumps horizontally off of the end of an unanchored boat in a lake, the person goes forward and the boat goes backward. This is an example of: 

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

Tags

NGSS.MS-PS2-1

While studying Newton's laws of motion, Margie and her lab partner were tasked with determining the relationship between mass and force. They placed four different masses on a table and pulled them using a spring scale. The following data table shows the different masses used in the experiment and the force required to pull each mass. Based on this information, what would your conclusion be?

Mass (kg)               Force (N)

5                               25

10                             50

15                             75

20                             100

• No clear relation can be observed between mass and force from the data.

• There is a direct proportion between the mass and force listed in the table.

• There is an inverse proportion between the mass and force listed in the table.

Tags

NGSS.MS-PS2-2

Sara and Greg built an electromagnet in science class. They wrapped 50 turns of copper wire around an iron nail and hooked the ends of the wire to a 1.5 volt battery. They picked up 15 paper clips with their electromagnet, but they want to make it stronger. What should they do?

• Use a nail with a plastic coating.

• Decrease the battery size.

• Wrap more turns of wire around the nail.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

A person with a foot fracture is walking without crutches or the use of an assistance device, such as a wheelchair. Which solution BEST reduces the impact that Newton's Third Law of Motion would have on the foot fracture patient?

• A cushion on the sole of the shoe to reduce the upward force of the floor.

• An increased heel to elevate the walker higher.

• A reduced grip on the bottom of the shoe to reduce friction.

• An increased grip on the shoe to facilitate walking faster.

Tags

NGSS.MS-PS2-2