8th sem exam

Speed in a given direction is the definition of ____. 

• Speed
• Velocity
• Acceleration
• Direction

Distance over Time is the definition of ___. 

• Speed
• Velocity
• Acceleration
• Direction

The rubbing or sliding of objects against each other, causing one object to slow down or stop.

• Gravity

• Friction

• Force

• Inertia

An objects resistance to move. If it is at rest, it will stay at rest and if it is in motion, it will stay in motion.

• Friction

• Gravity

• Inertia

• Air resistance

Basic SI unit of length or distance is:

• Meter

• Seconds

• Grams

• Minutes

A rocket travels 500 meters in 5 seconds. What was the speed of the rocket?

• 300 m/s

• 200 m/s

• 100 m/s

• 50 m/s

A type of force that has a NONZERO net force, which can cause a change in motion like a team winning tug-of-war:

• Balanced Forces

• Unbalanced Forces

• Gravity

• Air Resistance

Equal forces acting on an object in opposite directions; object will not move

• Unbalanced Forces

• Balanced Forces

• Friction

• Gravity

A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

What is a PUSH or PULL of an object?

• Motion
• Force
• Friction
• Gravity