QUIZ 11 NEWTON'S 3RD LAW (AFTER 7)

Newton’s law states that for every action, there is an ________ reaction.

• unequal and opposite

• equal and similar

• stronger and opposite

• equal and opposite

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

• False

• True

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

• The cannon moving forward

• The cannon moving backwards

• The cannonball moving backwards

• The cannonball moving forward

Action reaction forces never cancel each other out because

• They act on different objects.

• They act on the same objects

• They do not act on objects.

Action-reaction pairs can cause a change in motion.

• True

• False

If two people with the same mass collide, they experience the same amount of force.

• True

• False

When the person pushes the ground with their foot, the equal and opposite reaction force is

• the ground pushing back on their foot

• when they start to move forward

If a 10 kilogram object accelerates suddenly at 15 m/s², how much force was applied to the object?

• 150 Newtons
• 15 Newtons
• 150 kilograms
• 100 kilograms

According to Newton's _____ Law of Motion, when a hammer strikes and exerts force on a nail, the nail exerts an equal force back on the hammer.

• First
• Second
• Third
• Fourth

If you push a skateboard with a force of 8 N and your mass is 80 kg, what is the force that the skateboard exerts on you?

• 75 N

• 8 N

• 7N

• 10 N