Understand the force, motion, and waves.

An archer aims an arrow towards the target. She uses force to pull the arrow back with her arm.

What will be the direction of the force in this case?

A boy and his younger sister play with their toy car in the park. The brother uses force to push the car forward with his hands.

What is the direction of this push?

Team A plays a game of tug-of-war with Team B. Think about two of the forces that act on the rope:

• Team A pulls toward themselves.

• Team B pulls away from Team A.

As Team A pulls on the rope, what is the direction of the opposing force?

Alex hangs from a set of monkey bars. Think about two of the forces that act on Alex:

• The bar pulls up.

• Earth's gravity pulls down.

As the bar pulls on Alex, what is the direction of the opposing force?

Several drivers are pushing their cars down the road because the cars run out of fuel.

The cars have the same acceleration as the drivers begin to push them. Select the correct order of the colors of the cars to show the size of the force applied to each car.

At a track-and-field meet, athletes are taking turns throwing discuses.

The discuses have the same acceleration as they are being thrown. Select the correct order of colors of the discuses that are showing the size of the force applied to throw each discus.

The amplitude of a wave is how far it dips down or rises up from its resting position.

Select the wave with greater amplitude.

The wavelength of a wave is the distance between any two corresponding points on adjacent waves.

Find out which wave has a larger wavelength.