Velocity and Acceleration J.C Science Ireland

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction. For example, a car traveling 60 km/h to the north has a velocity of 60 km/h north.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be positive (speeding up) or negative (slowing down). For example, a car increasing its speed from 20 km/h to 60 km/h is accelerating.

Front

What is speed?

Back

Speed is the distance traveled per unit of time, without regard to direction. For example, if a runner covers 100 meters in 10 seconds, their speed is 10 m/s.

Front

What is the formula for calculating speed?

Back

The formula for calculating speed is v = d/t, where v is speed, d is distance, and t is time.

Front

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

Back

A flat line on a distance-time graph represents that the object is standing still, as there is no change in distance over time.

Front

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

Back

A steep line on a distance-time graph indicates that the object is moving quickly, as it covers a large distance in a short amount of 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

What is uniform acceleration?

Back

Uniform acceleration occurs when an object's velocity changes at a constant rate. For example, a car accelerating at 5 m/s² is uniformly accelerating.

Front

What is the unit of speed in the metric system?

Back

The unit of speed in the metric system is meters per second (m/s).

Front

How do you calculate acceleration?

Back

Acceleration can be calculated using the formula a = (v_f - v_i) / t, where a is acceleration, v_f is final velocity, v_i is initial velocity, and t is time.