Force and Motion Review

Which of the following always causes change in speed, direction, or both?

• balanced forces

• unbalanced forces

• either balanced or unbalanced forces

• any combination of forces

Tags

NGSS.MS-PS2-2

When a teacher is standing at the front of the class, the force of gravity is pulling them down toward the ground. The ground is pushing back with an equal and opposite force. This is an example of

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Newton's Law of Universal Gravitation

A car is traveling 40 kilometers an hour. It turns right at 40 kilometers per hour. The action the car takes changes its

• acceleration

• speed

• direction, but not its acceleration

• speed, but not its direction

If the net force on an object is zero, then what is true about the object?

• The forces applied to it are only reaction forces.

• The forces applied to it are only action forces

• The forces applied to it are unbalanced.

• The forces applied to it are balanced

Tags

NGSS.HS-PS2-1

Which of the following quantities is a velocity?

• 25 m/s

• 3 g/L in weight

• 15 m/s ²

• 10 km/hr eastward

Sam was learning how to roller skate. He did not want to go fast. On which kind of floor surface would Sam move the slowest?

• carpet

• tile

• concrete

• wood

How is the space shuttle able to leave Earth's surface?

• The space shuttle's engines create an upward force greater than the downward force of gravity

• The space shuttle's engines create a downward force greater than the upward force of gravity

• The space shuttle's engines create an upward force less than the downward force of gravity

• The space shuttle's engines create a downward force less than the upward force of gravity.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

According to Newton’s second law, in order to move a wheelbarrow a constant force is exerted. Which of the following will increase its acceleration?

• decreasing the mass of the wheelbarrow

• increasing the mass of the wheelbarrow

• changing the color of the wheelbarrow

• reversing the direction of the wheelbarrow

Tags

NGSS.MS-PS2-2

Which of the following best defines acceleration?

• The change in the distance divided by the change in time

• The change in the position of an object

• The change in the time it takes to move from one place to another.

• The change in the velocity divided by the change in time.

A motorcycle is being driven on a road moving north at 40 miles per hour. A car is driving on the same road moving south at 40 miles per hour. Which of the following is true?

• The motorcycle and the car are moving in opposite directions, so their velocities are different.

• The motorcycle and the car are moving in opposite directions, so their speeds are different.

• The motorcycle and car are moving at the same velocity but different speeds.

• The motorcycle and car are moving at the same velocity and the same speed.