Fall Final Exam

Front

What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula: F = ma, where F is the net force, m is the mass, and a is the acceleration.

Front

What is displacement?

Back

Displacement is the vector quantity that represents the change in position of an object. It is defined as the shortest distance from the initial to the final position, along with the direction.

Front

What is the formula to calculate acceleration?

Back

Acceleration (a) can be calculated using the formula: a = (final velocity - initial velocity) / time.

Front

What is the acceleration due to gravity (g) on Earth?

Back

The acceleration due to gravity (g) on Earth is approximately 9.81 m/s², often rounded to 10 m/s² for simplicity in calculations.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's 2nd Law, the relationship is given by the equation F = ma, meaning that force equals mass times acceleration.

Front

What is the significance of a net force of zero on an object?

Back

If the net force acting on an object is zero, the object will either remain at rest or continue to move at a constant velocity, according to Newton's First Law of Motion.

Front

What is the horizontal acceleration of a projectile?

Back

The horizontal acceleration of a projectile is 0 m/s², as there are no horizontal forces acting on it (ignoring air resistance).

Front

How do you calculate the net force acting on an object?

Back

The net force can be calculated by summing all the individual forces acting on the object, taking into account their directions.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force in the SI system is the Newton (N). One Newton is defined as the force required to accelerate a one-kilogram mass by one meter per second squared.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both the speed and direction of the object's motion.