EXAM

v₂ - v₁ / t₂ - t₁ is defined as

• average velocity

• instantaneous velocity

• displacement

• instantaneous acceleration

What is the formula to calculate speed?

• S = t/d
• S = d/t
• S = d x t
• S = t x d

What is speed?

• how far you go
• how much distance is covered over a period of time
• how fast you accelerate
• the change in the location of a object

A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?

• 10 m/s
• 1000 m/s
• 100 seconds
• 10 seconds

Alan travels 100 km in 5hrs. Find his average speed in km/h

• 5km/hr
• 10km/hr
• 50km/hr
• 20km/hr

What is the speed of an object that travels 60 meters in 4 seconds?

• 240 m/s
• 15 m/s
• 0.067 m/s
• 15 mph

What two measurements are necessary for calculating speed?

• Mass and time
• Temperature and mass
• Mass and distance
• Distance and time

How fast is this object moving?

• 1 meter

• 1 meter /second

• 2 meters/second

• 4 seconds

Which is true about plot c?

• position is negative

• velocity is positive

• position is changing

_____ are measured in units of m/s in Physics.

• Speed and velocity
• Distance and displacement
• Scalars
• Vectors