1.
How big a force does it take to give a 50kg object an acceleration of 40m/s^{2}? Hint: Use Newton's 2nd Law Of Motion
Correct Answer
B. 2000 N
Explanation
Variables: Solve:
40m/s^2=a (acceleration) F=ma
50kg=m (mass) F= 50(40)
F=? F= 50 X 40
F=2000N
2.
What is the formula that was stated in Newton's 2nd Law of Motion?
Correct Answer
F=ma
F=MA
Explanation
The formula stated in Newton's 2nd Law of Motion is F=ma. This equation represents the relationship between force (F), mass (m), and acceleration (a). It states that the force acting on an object is directly proportional to the mass of the object and the acceleration it experiences. The equation F=MA is incorrect because the acceleration is represented by a lowercase "a" and not an uppercase "A".
3.
If a person is pushing a cart with a force of 40 Newtons and it accelerates at 0.5m/s^{2} , what is the mass of the cart?
Correct Answer
C. 80 kg
Explanation
M=F/A , Solve:
F=40 N M=40/0.5
A=0.5 M=80 kg
4.
Fill in the blank below.
Newton's 1st Law - An object at rest will stay at rest unless acted on by an unbalnce force. An object in motion will stay in motion unless acted upon by ______ ___________ _____________. (Answer is all lowercase)
Correct Answer
an unbalanced force
Explanation
An object in motion will stay in motion unless acted upon by an unbalanced force. This means that if there is no unbalanced force acting on the object, it will continue to move with the same velocity. The presence of an unbalanced force can change the object's velocity, either by speeding it up, slowing it down, or changing its direction. Therefore, the correct answer is "an unbalanced force".
5.
Fill in the blank below.
Newton's 2nd Law - The acceleration of an object is ____________ to the force acting on it and inversely ___________ to its mass. (The answer you put in, will fill in for both blanks) (Answer is all lowercase!)
Correct Answer
proportional
Explanation
According to Newton's 2nd Law, the acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass. This means that as the force acting on an object increases, its acceleration also increases. Similarly, as the mass of an object increases, its acceleration decreases. Therefore, the correct answer for the blank is "proportional".
6.
Is this true or false? [For the same acceleration, more mass requires less force]
Correct Answer
B. False
Explanation
For the same acceleration, more mass requires MORE force.
7.
Is this true or false? [For the same mass, more acceleration requires more force]
Correct Answer
A. True
Explanation
The statement is true because according to Newton's second law of motion, the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. Therefore, to achieve a greater acceleration for an object with the same mass, a greater force is required.
8.
Fill in the blank below.
Newton's 3rd Law - Whenever one object exerts a force on another object, the second exert an _____ _______ ______ on the first. (Answer is all lowercase)
Correct Answer
equal and opposite
Explanation
Newton's 3rd Law states that when one object exerts a force on another object, the second object exerts an equal and opposite force on the first. This means that the force exerted by the second object is of the same magnitude as the force exerted by the first object, but in the opposite direction. This law helps to explain the concept of action and reaction, where every action force has a corresponding reaction force.
9.
Fill in the blank below.
Inertia is the property of an object that _______ change of motion.
(Answer is all lowercase)
Correct Answer
resist
resists
Explanation
Inertia is the property of an object that resists change of motion. It refers to the tendency of an object to maintain its current state of motion, whether it is at rest or moving at a constant velocity. This resistance to change in motion is due to the object's mass and is described by Newton's first law of motion.
10.
If a 50 N force pulls on a 10 kg object, how much acceleration will occur?
Hint: Use the equation from Newton's 2nd Law of Motion
Correct Answer
A. 5 m/s^2
Explanation
Variables: Solve:
50 N=F F=ma
10 kg= m 50=(10)a
a = ? 50/10=10a/10
a=5m/s^2
11.
For what work is Issac Newton famous for?
Correct Answer
D. Laws Of Motion and Calculus
Explanation
Isaac Newton is famous for his work on the laws of motion and calculus. He formulated the three laws of motion, which describe the relationship between an object's motion and the forces acting upon it. These laws are fundamental principles in the field of physics. Additionally, Newton made significant contributions to the development of calculus, a branch of mathematics that deals with rates of change and the calculation of derivatives and integrals. Newton's work in both areas revolutionized the fields of physics and mathematics and laid the foundation for many scientific advancements.
12.
Fill in the blank below.
_____________ is any action that can change or cause motion. It can be any push or pull.
Correct Answer
Force
force
Explanation
Force is any action that can change or cause motion. It can be any push or pull.
13.
Fill in the blank below.
_____________ is the force pulling all object toward each other.
Correct Answer
Gravity
gravity
Explanation
Gravity is the force pulling all objects toward each other. It is a fundamental force of nature that causes objects with mass to attract each other. The strength of gravity depends on the mass of the objects and the distance between them. It is responsible for keeping planets in orbit around the sun, and objects on Earth grounded. Gravity is a universal force that affects everything in the universe.
14.
Fill in the blank below.
___________ (N) to measure force.
Correct Answer
Newton
newton
Newtons
newtons
Explanation
The blank should be filled with "Newton" or "newton" or "Newtons" or "newtons" because these are all valid units of measurement for force.