Linear Motion Problems

Acceleration is the rate of change in ___________.

• speed
• distance
• velocity 
• displacement 

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

• Its direction changes

• It doesn't

• It slows down

• Its speeds up

Tags

NGSS.HS-PS2-1

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

• 24 m/s²

• 18 m/s²

• 16 m/s²

• 16 m/s

Tags

NGSS.HS-PS2-1

The SI unit for acceleration is

• mph
• ft/sec²
• m/s²

Tags

NGSS.HS-PS2-1

An object travels 8 meters north in the first second of travel, 8 meters north during the next second of travel, and 8 meters north again during the third second.  Its ACCELERATION is ____________.

• 16m/s²
• 8m/s²
• 0m/s²
• 32m/s²

Suppose a car is moving in a straight line and steadily increases its speed.  It moves from 35 km/h to 40 km/h the first second and from 40 km/h to 45 km/h the next second.  What is the car’s acceleration?

• 40 km/h*s
• 10 km/h*s
• 5 km/h*s
• 45 km/h*s

If an object were equipped with a speedometer and allowed to fall freely where the acceleration due to gravity is 20 m/s², the reading on the speedometer would increase each second by

• 40 m/s
• 20 m/s
• A rate that depends on its initial speed
• 10 m/s

Ten seconds after starting from rest, a freely falling object will have a speed of about _____________.

• 100 m/s
• 500 m/s
• 50 m/s
• 10 m/s

How far would an object in free fall, fall after 2 seconds?

• 20 meters
• 30 meters
• 15 meters
• 10 meters

How fast is an object falling after the first second of freefall?

• 5 m/s
• 10 m/s
• 50 m/s
• 1 m/s