Laws of motion review

Which of the following best describes the velocity of an object?

• 30 m/s
• 30 m East
• 30 m/s East
• 30 m/s²

A bus travels 20 km in 30 minutes.  What is the average speed of the bus?

• 20 km/h
• 30 km/h
• 40 km/h
• 50 km/h

The diagram below shows two different forces acting on a cyclist riding a bicycle.
The total mass of the cyclist and the bicycle is 100.0 kg.  Based on this information, what is the acceleration of the cyclist?

• 0.66 m/s² backward, because the force of the air slows the cyclist down
• 0.66 m/s² forward, because the applied force is greater than the force of the air
• 2.3 m/s² backward, because the forces are opposite and not equal
• 2.3 m/s² forward, because the cyclist's inertia is greater than the force of the air

Some students were investigating the speed of a toy car they built.  They performed two trials and recorded their data in the table below.
What was the average speed of the toy car during the two trials to the nearest tenth of a m/s?

• .7 m/s
• 1.4 m/s
• 12.6 m/s
• 113.4 m/s

What is the formula for force?

• F=M/A
• F=A/M
• F=M*A
• F=M*F

Tags

NGSS.MS-PS2-2

45 m/s² is the... 

• Mass
• Force 
• Acceleration
• weight

Unit of mass

• m/s 2
• m/s
• newtons
• kg

If net force acting on object is 0, then the force is considered to be..

• Balanced
• Unbalanced
• Equal in Direction
• Distance/Time

A cat sitting on couch, a pencil on desk and a car at rest are all example of..

• Balanced Force
• Unbalanced Force

Tags

NGSS.MS-PS2-2

A car speeding up, a dog slowing down and person turning around the block are examples of..

• Balanced Forces
• Unbalanced Forces

Tags

NGSS.MS-PS2-2