Forces and Motion Science

Students on a hiking field trip measure and recorded their motion. They started to record data as soon as they left the bus. About how long did it take the students to return to the bus?

• 20 minutes

• 50 minutes

• 60 minutes

• 40 minutes

What is the Law of Conservation of Momentum?

• The total momentum of a group of objects remains constant unless outside forces act on the group.

• The total acceleration of a group of objects remains constant unless outside forces act on the group.

• The total velocity of a group of objects remains constant unless outside forces act on the group.

• The total speed of a group of objects remains constant unless outside forces act on the group.

Tags

NGSS.HS-PS2-2

Which has the correct units in this order distance, speed, velocity, acceleration, an momentum?

• m; s; m/s; m/s²; kg x m/s

• m/s; s; m; kg x m/s; m/s²

• s; m; m/s; m/s²; kg x m/s

What is the difference between speed and velocity?

• Speed is the distance an object travels in a unit of time.

  Velocity is the distance and the direction in which the object travels.

• Speed is the distance and the direction in which the object travels.

  Velocity is the distance an object travels in a unit of time.

• Speed is the distance an object travels in a unit of time.

  Displacement is the distance and the direction in which the object travels.

• Displacement is the distance an object travels in a unit of time.

  Velocity is the distance and the direction in which the object travels.

What is the difference between distance and displacement?

• Displacement is how far you have or will travel.

  Distance is how far and what direction you have traveled. .

• Speed is how far you have or will travel.

  Displacement is how far and what direction you have traveled. .

• Distance is how far you have traveled.

  Displacement is how far and what direction you have traveled. .

• Velocity is how far you have or will travel.

  Distance is how far and what direction you have traveled.

Which measurements require direction as part of the answer?

• Distance

• Speed

• Displacement

• Velocity

What is acceleration?

• The speed of an object.

• How fast something goes.

• The change in velocity divided by the time it takes for the change to occur.

• How far the object has to go.

What is the formula for momentum?

• m=p/v

• p=mv

• v=p/m

Tags

NGSS.HS-PS2-2

What is the formula for acceleration?

• a=pv

• p=mv

• a=d/t

• a= (sf-si)/t

What is Newton's First Law of Motion?

• An object at rest stays at rest and an object in motion stays in motion unless acted upon by an external force.

• The force acting on an object is equal to the mass of that object times its acceleration.

• For every action, there is an equal and opposite reaction.

• The total energy of an isolated system remains constant.