GIVING BRAINLIEST
How did Newton make sure his ideas about gravity were true?

He repeated experiments to test his ideas about gravity and force.

He asked other scientists to look over his data.

He made observations of animals in his mother's garden.


2.
Choose the best answer.

Which of Newton's laws of motion states, “For every action, there is an equal and opposite reaction”?

Newton's third law of motion

Newton's second law of motion

Newton's first law of motion


3.
Choose the best answer.

If a brick has a mass of 10 units and acceleration of 10 units, what is the force?

20 N

100 N

100 mph


4.
Choose the best answer.

If a penny and a brick are dropped at the same time in a vacuum, what would happen?

The brick and penny would fall at the same speed.

The brick would fall faster than the penny.

The penny would fall faster than the brick.


5.
Choose the best answer.

Which of the following is not an example of acceleration?

making a right turn

slowing down

moving at a constant speed


6.
Match the word with the description.

_____ - speed in the direction of north, south, east, or west


distance

velocity

acceleration

inertia


7.
Choose the best answer.

Which of Newton's laws of motion states, “An object at rest tends to stay at rest and an object in motion tends to stay in motion unless an outside force acts upon it”?

Newton's second law of motion

Newton's third law of motion

Newton's first law of motion


8.
Match the word with the description.

_____ - the length between two positions


inertia

velocity

distance

speed


9.
Match the word with the description.

____ - the tendency of an object to resist moving or changing motion


friction

velocity

inertia

speed


10.
Match the word with the description.

____ - describes something that is always observed to be true


experiment

theory

hypothesis

law


11.
Choose the best answer.

A car is driving 55 miles per hour east. The car changes direction to head north but still travels at 55 miles per hour. Which is true?

The car is following Newton's third law of motion.

The car is accelerating.

The car is not accelerating.


12.
Choose the best answer.

Friction acts to ___ a falling item.

speed up

slow down


13.
Choose the best answer.

Isaac Newton was the first person to discover the force of ___.

friction

magnetism

gravity


14.
Choose the best answer.

Which of Newton's three laws of motion has to do with inertia?

Newton's third law of motion

Newton's second law of motion

Newton's first law of motion


15.
Match the word with the description.

_____ - a change in velocity


acceleration

inertia

speed

distance


16.
Choose the best answer.

Which of the following statements is true?

Only the gas pedal is considered an accelerator in a car.

A steering wheel is not an accelerator in a car.

Gravity causes heavier objects and lighter objects to fall at the same rate.


17.
Choose the best answer.

Which of Newton's three laws of motion says that force always acts in pairs?

Newton's third law of motion

Newton's first law of motion

Newton's second law of motion


18.
Choose the best answer.

Which of Newton's three laws of motion has two parts dealing with force, mass, and acceleration?

Newton's second law of motion

Newton's third law of motion

Newton's first law of motion


19.
Choose the best answer.

Why are Newton's laws called laws and not theories?

The laws have been proven by many other scientists.

The laws have always been observed to be true.

Both of these.

PREVIOUS