Year 10 Week 8 Assignment (Force 2)

If you are driving forward and suddenly break, what would happen to your body and which law does that demonstrate?

• go back, 1st Law
• move forward, 1st Law

Forces always act in equal and opposite pairs.

• Newton's 1st Law
• Newton's 3rd Law

Which force always pulls downward on objects?

• Support force

• Friction force

• Gravity

• Air resistance

Tags

NGSS.MS-PS2-4

A change to an objects motion is caused by...

• Balanced forces

• Unbalanced forces

• Acceleration

• Velocity

Tags

NGSS.MS-PS2-2

Describe the motion of a person not wearing a seat belt if the car stops suddenly.

• The person and car will stop together.

• The person will stop faster than the car because they are lighter.

• The car will stop and the person will keep moving forward because of inertia.

• The car will stop and the person will speed up.

What forces are acting on a dropped book that falls to the floor?

• Gravity only

• Gravity and air resistance

• Air resistance

• Friction only

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which ball will hit the ground first?

• Metal first, then plastic, then wood last

• Wood first , then plastic, then metal last

• They will all hit at the same time.

• There is no way to tell.

A duck flies 60 meters in 10 seconds. What is the duck’s speed?

• 600 m/s

• 50 m/s

• 6 m/s

• 70 m/s

What unit do scientists use to measure force?

• Newton

• Grams

• Meters

• Meter per second per second

An unstretched spring has a length of 0.10 meters. When the spring is stretched by a force of 16 newtons, its length is increased to 0.18 meters. What is the spring constant of this spring? 

• 0.89 N/cm 
• 2.0 N/cm 
• 1.6 N/cm 
• 1.8 N/cm