If John Cena's speed increases from 15 m/s to 25 m/s over 5 seconds, what is his acceleration?

• 1 m/s²

• 2 m/s²

• 3 m/s²

• 4 m/s²

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NGSS.HS-PS2-1

How do you calculate acceleration?

• a = (final velocity - initial velocity) / time

• a = (initial velocity - final velocity) * time

• a = final velocity / time

• a = initial velocity + final velocity

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What does it mean if an object has constant acceleration?

• The object's velocity changes at a steady rate over time.

• The object's speed remains the same throughout its motion.

• The object moves in a straight line without changing direction.

• The object's acceleration varies randomly over time.

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NGSS.HS-PS2-1

What is the difference between speed and velocity?

• Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

• Speed and velocity are the same; both are scalar quantities.

• Velocity is a scalar quantity, while speed is a vector quantity.

• Speed is measured in meters per second, while velocity is measured in kilometers per hour.

What is the significance of the time variable in acceleration calculations?

• Time is crucial in determining how quickly an object's velocity changes, affecting the calculated acceleration.

• Time has no effect on acceleration calculations.

• Time is only relevant in distance calculations, not acceleration.

• Time is used to measure the total distance traveled by an object.

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What is acceleration?

• Acceleration is the rate of change of velocity of an object.

• Acceleration is the force applied to an object.

• Acceleration is the distance traveled by an object over time.

• Acceleration is the speed of an object in a given direction.

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NGSS.HS-PS2-1

If Nyla slows down from 56 miles/hour to 6 miles/hour in 25 seconds, what is her acceleration?

• -2 m/s²

• -1 m/s²

• 0 m/s²

• 2 m/s²

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NGSS.HS-PS2-1

What is the formula for calculating final velocity?

• v = initial velocity + (acceleration × time)

• v = initial velocity - (acceleration × time)

• v = (initial velocity × time) + acceleration

• v = (initial velocity ÷ time) + acceleration

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NGSS.HS-PS2-1

If a car's velocity decreases from 83 m/s to 33 m/s in 4 seconds, what is the acceleration?

• -12.5 m/s²

• 5 m/s²

• -10 m/s²

• 0 m/s²

Tags

NGSS.HS-PS2-1

How can you tell if an object is accelerating from a graph?

• If the slope of the velocity-time graph is positive, the object is accelerating; if it's negative, the object is decelerating.

• If the graph is a straight line, the object is accelerating.

• If the velocity-time graph is horizontal, the object is accelerating.

• If the slope of the velocity-time graph is zero, the object is accelerating.

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