Physics True or False exam+

Front

The principle of conservation of mechanical energy states that the total mechanical energy of a system remains constant if only conservative forces are acting.

Back

True

Front

Uniform circular motion involves an object moving in a circle at a constant speed.

Back

True

Front

The centripetal force required for circular motion is directed towards the center of the circle.

Back

True

Front

What is the unit of force?

Back

N (Newton)

Front

Torque is the rotational equivalent of linear force.

Back

True

Front

What is the formula for calculating kinetic energy?

Back

KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the formula for gravitational potential energy?

Back

PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

In a vacuum, all objects fall at the same rate regardless of their mass. True or False?

Back

True

Front

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

Back

F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the law of universal gravitation?

Back

Every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.