Physics Overview

Metals are good conductors of electricity because

• they contain free electrons
• the atoms are lightly packed 
• they have high melting point
• all of the above

Planets do not twinkle because

• they emit light of a constant intensity
• Their distance from the earth does not change the  time
• They are very far away from the earth resulting in decrease in intensity of light
• They are nearer to earth and hemce we recieve a greater amount of light and, therefore minor variations in the intensity are not noticeable

Light from the sun reaches us in nearly

• 2 minutes
• 4 minutes
• 8 minutes
• 16 minutes

Light year is a unit of

• Time
• Distance
• Light
• Intensity of light

Which of these is a unit of work?

• Watt
• Meter
• Joule
• Newton

The orbits of the planets around the sun are 

• Circular
• Horizontal
• Elliptical
• Diagonal

What is the curved path that an object follows when thrown or launched near the surface of the Earth?

• Terminal Velocity
• Projectile Motion
• Free Fall
• Gravity

Peanut ran 50 meters in 10 seconds.  What was Peanut's average speed?

• 2 m/s
• 5 km/h
• 5 m/s
• 5 m/s North

When a skydiver is falling through the air, they are in free fall.

• True 
• False

When an object has a net force of 0 N, it is an example of what kind of force?

• Balanced
• Unbalanced
• Acceleration
• Gravity