Amplify Force and Motion

Which of the following would reduce the impact force during a collision?

• Higher mass

• Lower velocity

• Lower collision time

• Higher mass

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is one way to decrease the velocity of a falling object?

• Increase air resistance

• Decrease air resistance

• Increase mass

• Decrease the surface area

Which forces does this train have to overcome to reach its maximum speed?

• electricity, friction, and air resistance

• gravitational, magnetic, normal force

• tension, spring, friction

• friction, air resistance, gravitational

Tags

6-8.AG.7.1

What is work?

• The distance an object moves.

• The force applied to an object times the distance it moves in the direction of the force.

• The speed of an object.

• The force applied against an object.

Tags

NGSS.MS-PS3-5

What are the forces like when an apple falls to the ground?

• The ground experiences a much smaller force than the apple.

• Both the ground and the apple experience the same strength forces.

• The apple experiences a much smaller force than the ground.

• The ground experiences no force, only the apple does.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which type of force does air resistance provide?

• A force in the opposite direction of motion, reducing the velocity.

• A force in the same direction as motion, reducing the velocity.

• A force in the same direction as motion, increasing the velocity.

• A force in the opposite direction of motion, increasing the velocity.

What effect does a greater mass have during a collision?

• Greater impact force

• Lower impact force

• Greater velocity

• Lower collision time

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Three boats were moving across the surface of a lake. The gray and pink boats are a greater mass than the orange boat. Each boat was bumped by another boat. Which boat experienced the strongest force when hit? How do you know?

• The gray and pink boats because they are more massive, and all boats changed velocity by same amount.

• The pink boat - it's as massive as the gray boat and has the highest ending speed.

• All three - they all changed speed by the same amount.

• The gray boat - it takes more force to slow down an object than it takes to make it go faster.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In which crash did the puck experience a stronger force?

• The puck didn't experience a force. Only the paddles experienced force.

• Crash 2: The force of the purple paddle was stronger in this crash because it has more mass, so the force on the puck was stronger,

• The diagram doesn't tell you anything about the force on the puck.

• The puck experienced the same force in both crashes.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In which crash did the test car experience a stronger force?

• Crash 1: Force on garbage truck was stronger, so force on car was also stronger.

• There is NO force on the car. In each crash, only the truck experienced force.

• It was the same from both crashes. The trucks changed speed by the same amount in both crashes, so the force on the test car was the same both times.

• The diagram doesn't tell you anything about the force on the test car. It only tells you about the force on the trucks.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2