semester 1 Review part 1

Front

What happens when two objects push against each other on a frictionless surface?

Back

Both objects will move in opposite directions due to Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction.

Front

What is air resistance?

Back

Air resistance is a force that opposes the motion of an object through the air, acting in the opposite direction to the object's velocity.

Front

What is the velocity of an object at its highest point in projectile motion?

Back

The velocity is zero at the highest point because the object momentarily stops before descending.

Front

How is displacement defined in physics?

Back

Displacement is the shortest distance from the initial to the final position of an object, taking direction into account.

Front

What happens to the speed of a spaceship when it fires its engines?

Back

The speed of the spaceship increases as long as the engines are firing, but it becomes constant when the engines are turned off.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a net external force.

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 speed and direction.

Front

What is the formula for calculating displacement?

Back

Displacement = Final Position - Initial Position.

Front

What does it mean for an object to be in equilibrium?

Back

An object is in equilibrium when the net force acting on it is zero, resulting in no acceleration.

Front

What is the principle of conservation of momentum?

Back

The total momentum of a closed system remains constant if no external forces act on it.