Kinematics Heavy Homework

A  car starts from rest and after  7 seconds it is moving at 42  m/s. What is the car’s acceleration?

• 0.17
• 1.67
• 6
• 7

Tags

NGSS.HS-PS2-1

A car accelerates at 2 m/s². Assuming the car starts from rest, how much time does it need to accelerate to a speed of 16 m/s?

• 4 s
• 8 s
• 16 s
• 1/16 s

Tags

NGSS.HS-PS2-1

What is the average speed of a car that travels 35 meters in 12 seconds?

• None
• 3.1 m/s
• 35 m/s
• 2.9m/s

How long will it take a running horse to travel 260 m and attain a speed of 12 m/s from rest?

• 1200 seconds
• 1.2 hours
• 43 Hours
• 43 minutes

A car is traveling at 21.0 m/s. It slows to a stop at a constant rate over 5.00 s. How far does the car travel during those 5.00 seconds before it stops? 

• 4.20 m
• 52.5 m
• 105 m
• 158 m

Tags

NGSS.MS-PS2-2

The SI unit for length or distance is

• foot (ft)
• inch (in)
• mile (mi)
• meter (m)

The SI unit for time is

• second (s)
• minute (min)
• hour (hr)
• year (yr)

What is the SI unit for acceleration?

• m/s
• m
• m/s²
• s

Tags

NGSS.HS-PS2-1

What is the SI unit for speed and velocity?

• Km
• s
• m/s
• m/s²

In each of the following cases, determine which car has the greatest acceleration.

• starts from 0 m/s to 20 m/s in 4 seconds.
• speed up from 20m/s to 40m/s in 3 seconds
• slow down from 50m/s to stop in 2 seconds
• starts from 0 m/s to 20m/s in 5 seconds

Tags

NGSS.HS-PS2-1