Speed, Velocity, and Acceleration

Tom walks South at 2.5 m/s and then turns East and continues at 2.5 m/s. Which statement is true about Tom's motion.

• Tom's speed changes but his velocity stays the same.

• Tom's speed stays the same but his velocity changes.

• Tom's speed and velocity both change.

• Tom's speed and velocity remain the same.

Which situation below is experiencing balanced forces?

• A bird lands on a branch.

• A ball rolls down a ramp.

• A car goes a constant speed.

• A swing moves back and forth.

Which of the following is not accelerating?

• A car going a constant speed.

• A car speeding up.

• A car slowing down.

• A car changing direction.

Two forces act on this box on a smooth surface. Which statement describes the ACCELERATION of the box.

(F= m x a)

• The box accelerates at 1.0 m/s² to the right because the greater force is to the right.

• The box accelerates at 1.5 m/s² because the net force is 20 N to the right.

• The box accelerates at 2.0 m/s² because the combined forces cause the box to accelerate.

• The box does not accelerate because neither force is great enough to move the box.

Tags

NGSS.MS-PS2-2

All the cars are traveling at the same speed. Which cars are accelerating because they are changing velocity?

• A, C. D. are changing their velocity because it is easier to speed up on a straight track.

• B, E, F are changing velocity because the are traveling on a curve.

• None of the cars are changing velocity because they are all traveling at the same speed.

• All the cars are changing velocity because they are going different speeds.

Tags

NGSS.MS-PS2-2

What was the ball's average speed on this graph? (s=d/t)

• 0.2 m/s

• 0.5 m/s

• 2 m/s

• 5 m/s

Tags

NGSS.MS-PS3-1

Which statement describes the motion in the graph?

• The object speeds up, slows down, and speeds up again.

• The object speeds up, travels at a constant speed.

• The object goes a constant speed away, stops, and goes a constant speed away again.

• The object is traveling away at a constant speed the whole time.

Which statement describes the motion of the object in the graph?

• The object is speeding up the entire time.

• The object is going a constant speed, then begins to speed up.

• The object is going a constant speed, then slows down and stops.

• The obect is going a constant speed the whole time.

Which graph would represent a skier constantly accelerating as she travels downhill.

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Tags

NGSS.HS-PS2-1

Which graph would represent a car speeding up to get on the highway, then going a constant speed, then speeding up to pass a car.

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Tags

NGSS.MS-PS3-1