12/5/24 Distance/Time and Speed/Time

Front

What is the formula to calculate speed?

Back

S = d/t, where S is speed, d is distance, and t is time.

Front

What does a distance-time graph represent?

Back

It shows how distance changes over time, indicating speed and movement.

Front

If a car travels 60 kilometers in 1.5 hours, what is its speed?

Back

Speed = Distance / Time = 60 km / 1.5 h = 40 km/h.

Front

What does it mean if a point on a distance-time graph is stationary?

Back

It means the object is not moving; the distance remains constant over time.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object over time.

Front

If a toy car takes 20 seconds to travel 10 meters, what is its speed?

Back

Speed = Distance / Time = 10 m / 20 s = 0.5 m/s.

Front

What does a flat line on a distance-time graph indicate?

Back

A flat line indicates that the object is stationary.

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 if a car is moving at a fast steady speed?

Back

It means the car is covering equal distances in equal intervals of time without changing speed.

Front

How can you determine if an object is accelerating from a distance-time graph?

Back

If the graph is curved upwards, the object is accelerating.