5.P.1.1: Relationships of Force & Motion

A pencil rolled to the edge of the table then fell to the floor. Which force

pulled the pencil toward the ground?

• speed

• gravity

• friction

• mass (weight)

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which of the following statements best explains why it can be dangerous to drive a car on an icy road in the winter?

• Ice increases the force of gravity acting on a car.

• Ice increases the mass (weight) of a car.

• Ice reduces the friction between the car’s tires and the road.

• Ice reduces the speed of the car.

The picture shows water flowing down the side of a mountain. Which of the following causes water to flow down the sides of mountains and

hills?

• friction

• speed

• direction

• gravity

Tags

NGSS.MS-ESS2-4

Reece rolls a ball down a smooth, wooden ramp and observes the motion of the ball. Then he places sandpaper on the ramp. Next, he rolls the same ball down the ramp covered with sandpaper and observes the motion of the ball.

What is Reece most likely investigating?

• He is investigating if a change in gravity affects the motion of the ball.

• He is investigating if a change in friction affects the motion of the ball.

• He is investigating if a change in mass affects the motion of the ball.

• He is investigating if a change in direction affects the motion of the

  ball.

Which of the following best describes friction?

• A force that pulls objects toward the ground.

• A force that is created when two objects move across each other.

• A force that pulls two objects apart.

• A force that makes an object move faster.

Four shopping carts are filled with different loads of groceries. Which shopping cart will require the least amount of force to make it move?

• Cart A

• Cart B

• Cart C

• Cart D

Tags

NGSS.MS-PS2-2