Honors Physics Mechanics Review Sem 1

Front

What is the net force on an object?

Back

The net force is the vector sum of all the forces acting on an object, determining its acceleration and direction of motion.

Front

What is the initial vertical velocity of a ball projected horizontally?

Back

0 m/s. When a ball is projected horizontally, it has no initial vertical velocity.

Front

What happens to the tension in a rope when an object is lowered at constant speed?

Back

The rope tension equals the object’s weight when it is lowered at constant speed.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented as p = mv.

Front

Which of the following is NOT a unit of momentum?

Back

kg*m/s² is NOT a unit of momentum; it is a unit of force (Newton).

Front

What is the formula for calculating force?

Back

Force (F) is calculated using F = ma, where m is mass and a is acceleration.

Front

What is the principle of conservation of momentum?

Back

In a closed system, the total momentum before an event is equal to the total momentum after the event.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is the acceleration due to gravity on Earth?

Back

The acceleration due to gravity on Earth is approximately 9.8 m/s².

Front

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

Back

According to Newton's second law, force is directly proportional to mass and acceleration (F = ma).