Exploring Braking Distances through Graphs

What is the formula for calculating speed?

• Speed = Time / Distance

• Speed = Time - Distance

• Speed = Distance / Time

• Speed = Distance * Time

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If you travel 50 km in half an hour, what is your speed?

• 50 km/h

• 100 km/h

• 75 km/h

• 25 km/h

On a distance-time graph, what does an upwards curve indicate?

• Decreasing speed

• Constant speed

• Increasing speed

• No movement

How can you tell if you have reached a constant speed on a graph?

• The curve is a downward slope

• The curve is a straight line

• The curve is a zigzag line

• The curve is an upward slope

What is the distance traveled if the constant speed is maintained for 30 seconds and the speed is 16.7 m/s?

• 750 meters

• 500 meters

• 1000 meters

• 250 meters

What is the gradient of a speed-time graph used to determine?

• Acceleration

• Speed

• Time

• Distance

If a car travels 25.1 meters and comes to a stop in 2.7 seconds, what is its stopping distance?

• 9.8 meters

• 40 meters

• 25.1 meters

• 2.7 meters

What is the speed of Andy's car after traveling for 8 seconds if the distance covered is 140 meters in 6 seconds?

• 20 m/s

• 23.3 m/s

• 25 m/s

• 30 m/s

Tags

NGSS.MS-PS3-1

Why does a motorbike accelerate faster than a car?

• It has better tires

• It has more horsepower

• It has less mass

• It has a larger engine

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What happens to the stopping distance as the speed of the vehicle increases?

• It fluctuates

• It increases

• It remains the same

• It decreases

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