Force & Motion Review

Determine the speed of a golf ball that was hit 200meters in 5 seconds.  Use the equation SPEED = DISTANCE/TIME

• 1000 m/s
• 40 m/s
• .025 m/s
• 100 m/s

At 60 seconds, how far had this object traveled? 

• 0 m
• 10 m
• 20 m
• 40 m

What is happening at D?

• Stationary
• Accelerating
• Fast steady speed; moving away from the starting position
• Slower steady speed; moving away from the starting position

What is happening at A?

• Stationary
• Accelerating
• Slower steady speed; moving away from the starting position
• Steady speed; returning to start position

An identical object was placed onto the three different surfaces and set into motion with an identical force. The bars show how far it took the object to travel 10 meters. Based on the graph, which surface had the greatest friction?

• surface A
• Surface B
• Surface C
• Friction is the same on every surface

Tags

NGSS.MS-PS2-2

This force attracts all objects toward each other.

• Newton
• gravity
• weight
• path

How is motion affected when forces are balanced acting on an object?

•  Keep an object moving at the same speed.
•  Keep an object at rest or not moving
• Both options
• Neither option

Tags

NGSS.MS-PS2-2

The 5th graders were playing a game of tug-of-war.  The class was divided equally with half the class on one side of the rope and the other half on the opposite side.  For 5 minutes the students pulled and pulled but neither side could pull the flag to one side or the other.  Choose the description of the forces during the 5th grade tug-of-war.

• The forces were unbalanced in the game.
• The forces were friction, gravity, and chemical energy.
• The students all had the same amount of strength.
• The forces were balanced in the game.

The amount of matter in an object is what?

• pressure
• weight
• mass
• neutrinos

The rougher the surface, the faster an object will travel over the surface.

• True
• False