Motion, Speed, and Velocity

Jasmine is driving a car and has a mass of 60 kg. Laura is her passenger and has a mass of 90 kg. Jasmine suddenly brakes to avoid hitting a deer. Who experiences the greatest force due to the seatbelt?

• Jasmine. She has the least mass.

• Laura. She has the greatest mass.

• Laura. She has the greatest speed.

• Jasmine. She has the least speed.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

A baseball player is able to swing with exactly the same amount of force every time. Which object would leave the bat with the greatest speed when struck by the player?

• a 45 gram golf ball

• a 145 gram baseball

• a 540 gram croquet ball

• an 8200 gram bowling ball

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Which object will require the greatest amount of force to slow it to a stop, assuming all objects are initially moving at the same speed?

• a bicycle

• a bowling ball

• a car

• a skateboard

Tags

NGSS.MS-PS2-2

Which statement summarizes what will happen if a baseball and a bowling ball are thrown with the same force?

• The baseball will speed up faster.

• The bowling ball will speed up faster.

• The baseball will have more inertia than the bowling ball.

• The bowling ball will travel a greater distance

Tags

NGSS.MS-PS2-2

Which statement is true about additional force being applied to an object in motion?

• If an object is in motion and more force is applied in the direction of its motion, the object will remain at a constant speed.

• If an object is in motion and more force is applied in the direction of its motion, the object will begin moving faster.

• If an object is in motion and more force is applied in the direction of its motion, the object will begin to slow down.

• If an object is in motion and more force is applied in the direction of its motion, the object will come to a complete stop

Tags

NGSS.MS-PS2-2

Which scenario describes motion that would result in a person having a displacement greater than zero?

• a person waving to a friend

• a person walking on a treadmill

• a person who is riding in an airplane

• a person walking across a football field

What is true about an object that is used as a reference point for determining motion?

• It is stationary.

• It is accelerating.

• It is decelerating.

• It is changing direction.

A student wishes to determine the relative speed of an airplane from a distance-time graph of its flight. What information would be mostuseful to this student?

• the displacement of the plane from the distance-time graph

• the slope of the line of the distance-time graph

• the x -intercept of the distance-time graph

• the y -intercept of the distance-time graph

Tags

NGSS.MS-PS3-1

A person goes for a jog at a park. The person’s motion is shown in the graph.

Which statement best describes the person’s jog?

• The person stands still for 5 s, then jogs at a constant velocity for 3 s. The person rests for 2 s before returning back to the starting point 10 s later.

• The person jogs at a constant velocity for 5 s, then stands still for 3 s. The person jogs faster for 2 s before stopping for a 10 s break.

• The person jogs at a constant velocity for 5 s, then jogs faster for 3 s. The person jogs at a constant velocity for 2 s before jogging faster back to the starting point 10 s later.

• The person stands still for 5 s, then accelerates at an increasing velocity for 3 s. The person rests for 2 s before returning back at a faster velocity to the starting point 10 s later.

Tags

NGSS.MS-PS3-1

A student is riding his bicycle the 4 km to school from his house. The graph summarizes part of his trip over time.

If the student continues riding his bicycle at the same velocity, how much time will it take for him to reach school?

• 12 minutes

• 15 minutes

• 20 minutes

• 25 minutes

Tags

NGSS.MS-PS3-1