Kinematics-Class 9-BSEK

A hummingbird averages a speed of about 45 km/hour. It takes a non-stop trip in which they fly for 18 hours straight! How far is the trip at their average speed?

• 810 km

• 2.5 km

• 3.6 km

• 360 km

A car accelerates uniformly from rest at 3.2m/s ²

when the car traveled a distance of 40 m it’s speed will be

• 12.5 m/s

• 8.0m/s

• 16m/s

• 128m/s

A Cheetah is is running at 27 m/s to hunt down an Impala, after 360 m of complete chase when it slows down to 0 m/s . What is its acceleration?

• -1.0125 m/s²

• -0.98 m/s²

• 1.0125 m/s²

• -12.5 m/s²

What is the formula to calculate speed?

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

A change in velocity over time is known as:

• acceleration
• constant speed
• average speed
• displacement

The unit we use to measure acceleration is ___. 

• meters / second 
• meters 
• seconds 
• meters / second / second 

An airplane lands on a runway with a velocity of 150 m/s. How far will it travel until it stops if its rate of deceleration is constant at -3 m/s²?

• 525 m
• 3750 m
• 6235 m
• 9813 m

How much time would it take for an object to fall 4.7 meters?

• 0.959 s
• 4.79 s
• 0.979 s

A bird flies 5 m/s. How far has the bird traveled after 1 min?

• 5 m

• 12 m

• 120 m

• 300 m