Newtons 3 laws exam practice

Using Newton's second law of motion (F=ma), what acceleration results if a net force 2F acts on a mass 4m? A. 1/2 B. 8 C. 4 D. 2

A. 1/2

A person is pulling west with 35 N of force against a person pulling east with 15 N of force. What is the net force? A. 50 N west B. 50 N east C. 20 N east D. 20 N west

A. 50 N west

Which of Newton's three laws does the following example illustrate? If you have a hockey puck sliding along a table, it will eventually come to a stop. A. Newton's first law B. Newton's second law C. Newton's third law D. All of the above

A. Newton's first law

Which of Newton's three laws does the following example illustrate? The blood in your head rushes to your feet when riding on an elevator this is descending and abruptly stops. A. Newton's first law B. Newton's second law C. Newton's third law D. All of the above

A. Newton's first law

Which of Newton's three laws does the statement satisfy? An object at rest tends to stay at rest and an object in motion tends to stay in motion in a straight line at a steady speed until an unbalanced force acts upon it. A. Newton's first law B. Newton's second law C. Newton's third law D. All of the above

A. Newton's first law

Which of Newton's laws best explains why motorists should buckle up? A. The first law B. The second law C. The third law D. The law of gravity

A. The first law

You are standing in a moving bus, facing forward, and you suddenly fall forward, you can imply from this that the bus's A. Velocity decreased B. Velocity increased C. Speed remained the same, but turning right D. Speed remained the same, but turning left

A. Velocity decreased

If you push on a wall with a force of 10 Newtons, the force acting on you is A. 0 newtons B. 10 newtons C. 20 newtons D. 30 newtons

B. 10 newtons

According to Newton's third law, action and reaction are A. Equal and in the same direction B. Equal send in opposite directions C. Unequal and in the same direction D. Unequal and in the opposite direction

B. Equal and opposite direction

According to Newton's third law of motion, when a hammer strikes and exerts force on a nail, the nail A. Disappears into the wood B. Exerts an equal force back on the hammer C. Moves at a constant speed D. Creates a friction with the hammer

B. Exerts an equal force back on the hammer

Which of the following is the cause of an acceleration or a change in an object's motion? A. Speed B. Force C. Inertia D. Velocity

B. Force

Which of Newton's law does the following statement satisfy? The relationship between an objects mass its acceleration and the applied force F is F=ma. A. Newton's first law B. Newton's second law C. Newton's third law D. All of the above

B. Newton's second law

If two people are pulling against each other with forces of 500 N and 600 N, and here is a/an A. Balanced force B. Unbalanced force C. Weak force D. Universal force

B. Unbalanced force

When a woman stands were the two feet on a scale, the scale reads 300 N. When she lifts one foot, the scale reads A. 0 newtons B. 150 newtons C. 300 newtons D. 600 newtons

C. 300 newtons

One object has twice as much mass as another object. The first object also has twice as much A. Velocity B. Gravitational acceleration C. Inertia D. All of the above

C. Inertia

What is another name for the Newton's first law of motion? A. Law of acceleration B. Law of velocity C. Law of inertia D. Law of mass

C. Law of inertia

Which law states the need to wear seatbelts? A. Newton's first law B. Newton's second law C. Newton's third law D. All of the above

C. Newton's third law

Which of Newton's three laws does the following statement satisfy? For every action there is an equal and opposite reaction? A. Newton's first law B. Newton's second law C. Newton's third law D. All of the above

C. Newton's third law

Two people are pulling a refrigerator into a garage. One person is pulling south with 30 N of force, while the other person is pulling south with 25 N of force. What is the net force A. 5 N south B. 5 N north C. 55 N north D. 55 N south

D. 55 N south

Who was the scientist who gave us the laws of motion? A. Galileo B. Ms. Q C. Albert Einstein D. Sir Isaac Newton

D. Sir Isaac Newton