Forces and Motion

A combination of all the forces acting on an object

• Balanced Force

• Unbalanced Force

• Newton

• Net Force

Tags

NGSS.MS-PS2-2

On the motion graph what was the motion of the bus between Points A and Point B

• The bus was returning to it's starting point

• The bus was travelling at a fast constant speed

• The bus was stationary

• The bus was changing direction

Tags

NGSS.MS-PS3-1

During a 4-h trip, a boat sails 68 km in 2 h. Then the boat sails 3 km for 1 hr and 25 km in the last hour. What was the boat's average speed?

• 24 km/h

• 25 km/h

• 32 km/h

• 34 km/h

Melanie watched the path a baseball followed after a pitcher threw it. She noticed that the ball traveled horizontally away from the pitcher, as well as downward toward the ground. What force caused the ball to accelerate in the downward direction when it was thrown?

• electrical force

• gravitational force

• air resistance

• applied force

Tags

NGSS.MS-PS2-4

Which of these is evidence that an unbalanced force is acting on an object?

• The velocity of the object is changing.

• The mass of the object is changing.

• The object continues moving in a straight line at a constant velocity.

• The object remains at rest.

Tags

NGSS.MS-PS2-2

Which object has the greatest force of gravity acting on it?

• a 5-g object that is flat

• a 5-g object that is round

• a 15-g object that is flat

• a 10-g object that is round

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which properties determine the force of gravity between two objects?

• mass and distance

• mass and volume

• volume and density

• volume and distance

Tags

NGSS.MS-PS2-4

Which direction will this object move?

• up

• down

• left

• right

Tags

NGSS.MS-PS2-2

. Elizabeth is a wildlife biologist. She traveled by boat in the Everglades to observe alligators. The following graphs show the motion of her boat at several times during the trip.Which graph shows her boat travelling when it is NOT accelerating?

• graph a

• graph b

• graph c

• graph d

Tags

NGSS.MS-PS3-1

A push or pull exerted on an object in order to change the motion.

• Speed

• Acceleration

• Force

• Inertia

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2