Physics Semester 1 Review

Front

What is the formula to calculate the time it takes for a projectile to fall from a height?

Back

The time (t) can be calculated using the formula: t = √(2h/g), where h is the height and g is the acceleration due to gravity.

Front

What is the definition of acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time. It is measured in meters per second squared (m/s²).

Front

How does mass affect acceleration when a constant force is applied?

Back

According to Newton's second law, acceleration is inversely proportional to mass. Therefore, for a constant force, an object with greater mass will have less acceleration.

Front

What is the formula for calculating acceleration?

Back

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

Front

What is the significance of the negative sign in gravitational acceleration?

Back

The negative sign indicates that gravity acts downward, towards the center of the Earth.

Front

How do you calculate the distance traveled by an object under constant acceleration?

Back

Distance (d) can be calculated using the formula: d = initial velocity * time + 0.5 * acceleration * time².

Front

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

Back

According to Newton's second law, the relationship is given by the formula: F = m * a, where F is force, m is mass, and a is acceleration.

Front

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

Back

The unit of force is the Newton (N), which is defined as kg·m/s².

Front

What is the effect of air resistance on a projectile's motion?

Back

Air resistance opposes the motion of a projectile, reducing its acceleration and affecting its trajectory.

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.