Week 15 Flashcard 2nd

Front

What does it mean when an object is at rest?

Back

An object is at rest when it is not moving and remains in the same position over time.

Front

What does Newton's first law state about objects in motion?

Back

Objects will move at the same speed and direction unless a force acts on them to change that motion.

Front

How do you calculate the time it takes to travel a certain distance at a constant speed?

Back

Time = Distance ÷ Speed. For example, to travel 125 km at 50 km/h, it takes 2.5 hours.

Front

What information do you need to calculate speed?

Back

You need to know the distance traveled and the time taken to travel that distance.

Front

What is mass?

Back

Mass is the amount of matter in an object, typically measured in kilograms or grams.

Front

What is the formula for speed?

Back

Speed = Distance ÷ Time.

Front

What happens to an object's motion if no forces act on it?

Back

If no forces act on an object, it will continue to move at a constant speed in a straight line.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

If a bus travels 50 miles in 1 hour, what is its speed?

Back

The speed of the bus is 50 miles per hour.

Front

What is the unit of measurement for speed in the metric system?

Back

The unit of measurement for speed in the metric system is kilometers per hour (km/h).