Page 4 - Class VII Worksheets Forces and Energy

6. Fill in the blanks with the most appropriate word.
(Pivot, turn, elbow, arm, lever)

When you pull on a door, the door turns toward you. These are all examples of forces that
cause an object to ________. The object that turns is called a __________. The point around
which the it turns is called the ________. When you bend your ________, it acts as a lever.
Your_________ is the pivot.

7. Draw the distance/time graph shows a short train journey between two stations, P and R,
that are 2000 m apart. (Using below information)
The train leaves station P at time 0.
The train takes 200s to travel from P to R.
The train stops at station R for 140s.
The train then travels back from station R to station P in a time of 100s.

Answer the following questions:
a) At what speed does the train travel from station P to station R?
b) What is the speed of the train on the way back from station R to station P?

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