IB SEHS Option B

Which illustrates Newton’s second law of motion during a baseball game?

• The ball changes direction when hit by the bat due to an unbalanced outside force.

• The ball exerts a force on the bat when hit in the opposite direction.

• The distance the ball travels depends on the angle at which it is hit by the bat.

• The ball accelerates from the bat in proportion to the velocity of the bat swing

The diagram shows elbow extension. Which type of lever is used?

• First

• Second

• Third

• No lever is used during elbow extension

Which levers have the effort and the load on the same side of the fulcrum?

• I and II only

• I and III only

• II and III only

• I, II and III

The mass of a body being balanced in all directions defines which term?

• Center of mass

• Momentum

• Fulcrum

• Moment of inertia

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

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NGSS.MS-PS4-1

Explain the concept of angular momentum when a figure skater spins on ice.

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Which of Newton’s laws predicts the increase in acceleration of the swing when a child uses a lighter baseball bat?

• First

• Second

• Third

• First and Second

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NGSS.MS-PS2-2

Why does a diver use the tuck position?

• To reduce spin by decreasing moment of inertia

• To reduce spin by increasing moment of inertia

• To increase spin by decreasing moment of inertia

• To increase spin by increasing moment of inertia

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

. The diagram shows the lower leg. Identify the elements A, B and C of the lever system.

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What happens to the centre of mass when the basketball player prepares to shoot, moving from position A to position B?

• Does not move

• Moves upwards

• Moves downwards

• . Moves forwards