Topic 8 Test

Suppose a bulldozer is being hauled at 50 km/h to a construction site on the back of a flatbed truck. From which reference point would the bulldozer not appear to be moving?

• The road
• A traffic light
• The truck driver
• A roadside tree

Ahmed saw all of these things as he walked to school this morning. Which one is an example of a force pushing downward toward the ground?

• A bird sat on a telephone wire
• A woman moved her child from one place to another in a wagon
• A man pulled weeds in his garden
• A dog tugged on a rope a child held

If you are slowing down will your acceleration be positive, negative, or neither.

Which way will the rope go in the picture below and how much more force does it have than the other dog?

Tags

CCSS.HSN.VM.A.3

A train travels 70,000 meters, in a northward direction, in 46,800 seconds What is its velocity? ___________ m/s Northward

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CCSS.6.NS.B.3

A cheetah covers 240 meters in 8 seconds. What is its speed? ______ m/s

A northbound plane travels 10,000 meters in 60 seconds. What is its velocity? ____________________m/s

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CCSS.6.RP.A.3B

A car advertisement states that a certain car can accelerate from rest to 70 km/s in 7 seconds. Find the car’s average acceleration ____________km/s/s

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CCSS.6.RP.A.3D

A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. What is the lizard’s average acceleration? ______________m/s/s

Tags

CCSS.8.EE.C.7B

A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its average acceleration ___________________m/s/s