Review: Mod. 1The Kinematic Equations

Front

What is speed?

Back

Speed is how much distance is covered over a period of time.

Front

What happens to the distance an object falls each second in free fall?

Back

Each second, the object falls a larger distance than in the second before.

Front

What is a change in velocity over time called?

Back

Acceleration.

Front

If a car starts from rest and reaches 42 m/s in 7 seconds, what is its average acceleration?

Back

6 m/s².

Front

How do you calculate the value of 'g' if an object falls from a height of 2.7 meters in 0.61 seconds?

Back

The value of 'g' is 14.5 m/s².

Front

What is the formula for average acceleration?

Back

Average acceleration = (final velocity - initial velocity) / time.

Front

Define displacement.

Back

Displacement is the change in position of an object, measured as a straight line from the initial to the final position.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What does it mean for an object to be in free fall?

Back

An object in free fall is only under the influence of gravity, with no other forces acting on it.

Front

What is the significance of the acceleration due to gravity (g)?

Back

It represents the rate at which an object accelerates towards the Earth when in free fall, approximately 9.8 m/s² on Earth.