Quiz 1

• is the distance from end to end of an object

• Tools:  Meter Stick , Metric Ruler

What is the net force acting on an object in equilibrium?

• 0N

• 10N

• 9.8N

• Depend on the Objects velocity

1. What is derived quantities ?

• 1. a tendency to do nothing or to remain unchanged.

• 1. combination of two or more base quantities

• the quantity of motion of a moving body, measured as a product of its mass and velocity.

How can the length of a pendulum be measured?

• With a stopwatch 

• With a protractor

• With a ruler or measuring tape

• With a thermometer

A 50 kg object is in free fall. What is the force of gravity acting on it? (Use g=9.8 m/s2)

F=mg

• 50

• 98

• 490

• 980

Which of the following is NOT an example of a contact force?

• Friction
  

• Tension
  

• Gravitational force
  

• Normal force

Friction is an example of a _______ force.

1. What are base quantities?

• 1. quantities that can be defined independently

• 1. quantities that are derived from other quantities

• quantities that have no physical significance.

1. Which of the following is an example of a derived quantity?

• 1. Length

• 1. Area

• Time

1. The distance between two fixed point is?

• 1. Area

• 1. 1. Length

• 1. Volume

• 1. foot