Sem Review pt 1

Front

What is the formula to calculate distance when an object starts from rest and accelerates?

Back

Distance (d) = 0.5 * acceleration (a) * time (t)^2

Front

How do you calculate the time taken for an object to reach a certain speed from rest?

Back

Time (t) = final speed (v) / acceleration (a)

Front

What is the definition of acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time.

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

How do you calculate the average speed of an object?

Back

Average speed = total distance traveled / total time taken.

Front

What is the significance of a velocity-time graph?

Back

A velocity-time graph shows how the velocity of an object changes over time, and the slope of the graph represents acceleration.

Front

What does a horizontal line on a velocity-time graph indicate?

Back

A horizontal line indicates that the object is moving at a constant velocity.

Front

What is the formula for calculating distance when an object is moving with constant acceleration?

Back

Distance (d) = initial velocity (u) * time (t) + 0.5 * acceleration (a) * time (t)^2

Front

What is the definition of deceleration?

Back

Deceleration is a negative acceleration, meaning the object is slowing down.

Front

How do you determine the winner in a race based on distance-time graphs?

Back

The runner with the steepest slope (highest speed) on the distance-time graph is the winner.