WHICH OF THE FOLLOWING SITUATIONS IS AN EXAMPLE OF A SIGNIFICANT CHANGE IN MOMENTUM?

• A TENNIS BALL IS HIT INTO A NET.

• A HELIUM-FILLED BALLOON RISES UPWARD INTO THE SKY.

• AN AIRPLANE FLIES INTO SOME SCATTERED WHITE CLOUDS.

• A BICYCLIST RIDES OVER A LEAF ON THE PAVEMENT.

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NGSS.HS-PS2-2

NGSS.HS-PS2-3

THE IMPULSE EXPERIENCED BY A BODY IS EQUIVALENT TO THE BODY’S CHANGE IN

• momentum

• acceleration

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NGSS.HS-PS2-2

A 20 KG SHOPPING CART MOVING AT A VELOCITY OF 0.5 M/S COLLIDES WITH A STORE WALL AND STOPS. THE MOMENTUM OF THE SHOPPING CART

• increases

• decreases

• stays the same

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NGSS.HS-PS2-2

A SOCCER BALL COLLIDES WITH ANOTHER SOCCER BALL AT REST. THE TOTAL MOMENTUM OF THE BALLS

• increases

• decreases

• remains constant

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NGSS.HS-PS2-2

THE LAW OF CONSERVATION OF MOMENTUM STATES THAT

• THE TOTAL INITIAL MOMENTUM OF ALL OBJECTS INTERACTING WITH ONE ANOTHER USUALLY EQUALS THE TOTAL FINAL MOMENTUM.

• THE TOTAL INITIAL MOMENTUM OF ALL OBJECTS INTERACTING WITH ONE ANOTHER DOES NOT EQUAL THE TOTAL FINAL MOMENTUM.

• THE TOTAL MOMENTUM OF ALL OBJECTS INTERACTING WITH ONE ANOTHER IS ZERO.

• THE TOTAL MOMENTUM OF ALL OBJECTS INTERACTING WITH ONE ANOTHER REMAINS CONSTANT REGARDLESS OF THE NATURE OF THE FORCES BETWEEN THE OBJECTS.

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NGSS.HS-PS2-2

A CHILD WITH A MASS OF 23KG RIDES A BIKE WITH A MASS OF 5.5 KG AT A VELOCITY OF 4.5 M/S TO THE SOUTH. COMPARE THE MOMENTUM OF THE CHILD WITH THE MOMENTUM OF THE BIKE.

• The child has a greater momentum because it has a larger mass.

• They both have the same momentum

• the bike has more momentum.

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NGSS.HS-PS2-2

CARS ARE EQUIPPED WITH PADDED DASHBOARDS. IN COLLISIONS, THE PADDED DASHBOARDS WOULD BE SAFER THAN NON-PADDED ONES BECAUSE THEY

• Increase the impact time

• Increase the occupant’s impulse

• Decrease impact force

• all are true

• only A and C are true

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NGSS.HS-PS2-3

When calculating gravity between two objects, the distance should be measured between

• The outside edges of both objects

• The inside edges of both objects

• The middle of both objects

• The center of one object to the edge of the other object

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NGSS.HS-PS2-4

Why does an astronaut weigh less on the moon?

• The astronaut has less mass on the moon.

• The astronaut is farther from Earth’s center when he or she is on the moon.

• The gravitational field strength is less on the moon’s surface than on Earth’s surface.

• The astronaut is continually in free fall because the moon orbits Earth.

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NGSS.HS-PS2-4

If gravity did NOT affect the path of a horizontally thrown ball, the ball would ____.

• go straight up

• fall straight down

• follow a curved path

• travel horizontally

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NGSS.MS-PS2-4