Safety belts protect people in cars in the event of an accident because, according to Newton’s Laws of Motion, when an impact causes the car to suddenly change its motion, -

the people in the car will continue to move in the same direction and at the same speed as before the impact.

the speed of the car always increases, giving it greater force since the mass will remain the same.

the speed of the people always increases, since now they have, not one, but two forces acting on them.

the car now has a greater overall mass - its own mass plus the mass of the object by which it has been struck.

A wheeled cart is moving to the right at a constant speed. Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?

Balanced Forces, Constant Speed

Unbalanced Forces, Constant Speed

Unbalanced Forces, Acceleration

According to Newton’s Third Law, if someone jumps off a skateboard, the skateboard will roll backwards because -

for the force that sent the person forward, there is an equal force pushing back on the skateboard.

the mass of the skateboard is the same as the mass of the person jumping off.

the pull of gravity on the person is the same as on the skateboard, regardless of size.

the air resistance on the person is great and the friction on the skateboard is small.

An object in motion or at rest will ALWAYS travel....

in the same direction of the net force

in the opposite direction of the net force

When a car goes around a corner at 20 mph, why do we say it accelerates?

The car is accelerating because it's changing direction

The car is accelerating because of the velocity is constant

The car accelerates because it's going 20 mph

Cars always accelerate when they are in motion

Based on the information in the diagram, what is the net force acting on this object?

4 N downward at an increasing speed

12 N downward at a constant speed

4 N upward at an increasing speed

8 N to the left at a constant speed

Which answer choice best explains why tractor trailers take more time to speed up & slow down than regular cars?

Tractor trailers have more mass and require more force to move.

Tractor trailers have less mass and require less force to move.

Tractor trailers have less mass and require more force to move.

Tractor trailers have more mass and require less force to move.

Which of the following has a net force of 0 Newtons?

An asteroid moving at a constant speed through space

A car accelerating from a stop sign

A box of dishes falling from a counter

Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction. Which Newton's Law is being used in this example?

Newton's 3rd Law (Law of Action-Reaction)

Newton's 1st Law (Law of Inertia)

Newton's 2nd Law (Law of Acceleration)

Newton's 4th Law (Law of Science)

A crash test dummy is used to test the durability of a new car seatbelt technology developed by Besla electronics. During the first test, the seat belt failed and resulted to the dummy being ejected as seen on the pictures. Which of law of motion explains why the dummy ejected in that fashion?

Newton's 1st Law (Law of Inertia)

Newton's 2nd Law (Law of Acceleration)

Newton's 3rd Law (Law of Action-Reaction)

Newton's 4th Law (Law of Science)

The picture shows an aerialist walking on a tightrope and holding a balancing bar. An action-reaction pair forces exists between which ?

The aerialist's feet and the rope

Newton's 3 Laws 24

Authored by Cynthia Hufft

Physics

8th Grade

NGSS covered

Used 197+ times

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27 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A soccer ball accelerates more than a bowling ball when thrown with the same force.

Newton's first law

Newton's second law

Newton's third law

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?

Newton's 1st Law

Newton's 2nd Law

Newton's 3rd Law

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the picture, the vehicle will move tp the right because of...

Newton's 1st Law

Newton's 2nd Law

Newton's 3rd Law

Newton's 9th Law

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

20N

40N

10N

70N

Tags

NGSS.MS-PS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The acceleration of an object depends on ?

The amount of Force applied

The mass of an object

The mass of an object and the amount of force applied

None of these

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The masses of four vehicles and the net forces acting on them as they enter a highway are recorded in the table below. Which vehicle has the greatest acceleration as it enters the highway?

Sedan

Coupe

SUV

Truck

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to Newton’s Law of Inertia, which of the following objects will change its motion?

A bike rider on a smooth and level road, pedaling at a constant rate.

A train pulling on another train, each with the same amount of force.

A chair sitting on the floor with balanced forces acting in opposite directions.

A ball rolling across the floor with friction acting in the opposite direction.

Tags

NGSS.MS-PS2-2

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Newton's 3 Laws 24

A soccer ball accelerates more than a bowling ball when thrown with the same force.

This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?

In the picture, the vehicle will move tp the right because of...

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

The acceleration of an object depends on ?

The masses of four vehicles and the net forces acting on them as they enter a highway are recorded in the table below. Which vehicle has the greatest acceleration as it enters the highway?

According to Newton’s Law of Inertia, which of the following objects will change its motion?

Safety belts protect people in cars in the event of an accident because, according to Newton’s Laws of Motion, when an impact causes the car to suddenly change its motion, -

According to Newton’s Law of Inertia, an object that is moving will change its motion only if what kinds of forces act on it?

A wheeled cart is moving to the right at a constant speed. Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?

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