Accelerating

A correct measure of velocity would be

• 300 m/hr

• 7,800 m/sec

• 40 kn/hr north

Tags

NGSS.MS-PS3-1

A car is traveling at a velocity of 70 km/hr west. To have the same velocity, another car would have to travel at

• the same speed

• the same speed and in the same direction

• the same speed in a different direction

10 miles per hour is an example of an objects what?

• Velocity
• Speed
• Acceleration
• Inertia

A person walked 10 miles.  It took them 2 hours.  How fast were they walking?

• 8 mph
• 5 mph
• 2 mph
• 10 mph

The rate that a ccar's velocity changes is its

• speed

• force

• gravity

• accelleration

A golf ball accelerates off a tee at 15m/s², changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

• 750 seconds
• 35 seconds
• 0.3 seconds
• 3.3 seconds

Tags

NGSS.MS-PS2-2

Acceleration is defined as the CHANGE in 

• time it takes for one place to move to another place. 
• velocity of an object.
• distance divided by the time interval 
• velocity divided by the time interval 

Why does a car accelerate as it round a corner at a constant speed?

• Its direction changes
• It doesn't
• It slows down
• Its speeds up  

In each of the following cases, determine where the car has no acceleration ?

• A car shortly after a stoplight turns green.
• A car approaching a red light
• A car with the cruise control set at 80 km/h
• A car turning a curve at a constant speed

The SI unit for acceleration is

• mph
• ft/sec²
• m/s²