1st sem interim Review

Front

What is the velocity of a ball at the very top of its path when thrown into the air?

Back

The velocity is entirely horizontal.

Front

Which law explains the phenomenon of pulling a tablecloth out from under dishes without disturbing them?

Back

This is explained by Newton's 1st Law of Motion.

Front

What is the acceleration of a baseball at its highest point when thrown straight up?

Back

The acceleration is 9.8 m/s² due to gravity.

Front

Which law states that a larger mass requires a stronger force to accelerate?

Back

This describes Newton's 2nd Law of Motion.

Front

True or False: In the absence of air friction, the horizontal component of a projectile's velocity changes as it moves.

Back

False; it remains constant.

Front

Define Newton's 1st Law of Motion.

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What does Newton's 2nd Law of Motion state?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is the formula for calculating gravitational force?

Back

F = G * (m1 * m2) / r², where G is the gravitational constant.

Front

Explain the concept of projectile motion.

Back

Projectile motion is the motion of an object thrown into the air, subject to only the acceleration of gravity.

Front

What is the significance of the horizontal component of velocity in projectile motion?

Back

It remains constant throughout the motion in the absence of air resistance.